Mark Tyson@tomshardware.com
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OpenAI has recently launched its newest reasoning model, o3-pro, making it available to ChatGPT Pro and Team subscribers, as well as through OpenAI’s API. Enterprise and Edu subscribers will gain access the following week. The company touts o3-pro as a significant upgrade, emphasizing its enhanced capabilities in mathematics, science, and coding, and its improved ability to utilize external tools.
OpenAI has also slashed the price of o3 by 80% and o3-pro by 87%, positioning the model as a more accessible option for developers seeking advanced reasoning capabilities. This price adjustment comes at a time when AI providers are competing more aggressively on both performance and affordability. Experts note that evaluations consistently prefer o3-pro over the standard o3 model across all categories, especially in science, programming, and business tasks.
O3-pro utilizes the same underlying architecture as o3, but it’s tuned to be more reliable, especially on complex tasks, with better long-range reasoning. The model supports tools like web browsing, code execution, vision analysis, and memory. While the increased complexity can lead to slower response times, OpenAI suggests that the tradeoff is worthwhile for the most challenging questions "where reliability matters more than speed, and waiting a few minutes is worth the tradeoff.”
Recommended read:
References :
- Maginative: OpenAI’s new o3-pro model is now available in ChatGPT and the API, offering top-tier performance in math, science, and coding—at a dramatically lower price.
- AI News | VentureBeat: OpenAI's most powerful reasoning model, o3, is now 80% cheaper, making it more affordable for businesses, researchers, and individual developers.
- Latent.Space: OpenAI just dropped the price of their o3 model by 80% today and launched o3-pro.
- THE DECODER: OpenAI has lowered the price of its o3 language model by 80 percent, CEO Sam Altman said.
- Simon Willison's Weblog: OpenAI's Adam Groth explained that the engineers have optimized inference, allowing a significant price reduction for the o3 model.
- the-decoder.com: OpenAI lowered the price of its o3 language model by 80 percent, CEO Sam Altman said.
- AI News | VentureBeat: OpenAI released the latest in its o-series of reasoning model that promises more reliable and accurate responses for enterprises.
- bsky.app: The OpenAI API is back to running at 100% again, plus we dropped o3 prices by 80% and launched o3-pro - enjoy!
- Sam Altman: We are past the event horizon; the takeoff has started. Humanity is close to building digital superintelligence, and at least so far it’s much less weird than it seems like it should be.
- siliconangle.com: OpenAI’s newest reasoning model o3-pro surpasses rivals on multiple benchmarks, but it’s not very fast
- SiliconANGLE: OpenAI’s newest reasoning model o3-pro surpasses rivals on multiple benchmarks, but it’s not very fast
- bsky.app: the OpenAI API is back to running at 100% again, plus we dropped o3 prices by 80% and launched o3-pro - enjoy!
- bsky.app: OpenAI has launched o3-pro. The new model is available to ChatGPT Pro and Team subscribers and in OpenAI’s API now, while Enterprise and Edu subscribers will get access next week. If you use reasoning models like o1 or o3, try o3-pro, which is much smarter and better at using external tools.
- The Algorithmic Bridge: OpenAI o3-Pro Is So Good That I Can’t Tell How Good It Is
Mark Tyson@tomshardware.com
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OpenAI has launched o3-pro, a new and improved version of its AI model designed to provide more reliable and thoughtful responses, especially for complex tasks. Replacing the o1-pro model, o3-pro is accessible to Pro and Team users within ChatGPT and through the API, marking OpenAI's ongoing effort to refine its AI technology. The focus of this upgrade is to enhance the model’s reasoning capabilities and maintain consistency in generating responses, directly addressing shortcomings found in previous models.
The o3-pro model is designed to handle tasks requiring deep analytical thinking and advanced reasoning. While built upon the same transformer architecture and deep learning techniques as other OpenAI chatbots, o3-pro distinguishes itself with an improved ability to understand context. Some users have noted that o3-pro feels like o3, but is only modestly better in exchange for being slower.
Comparisons with other leading models such as Claude 4 Opus and Gemini 2.5 Pro reveal interesting insights. While Claude 4 Opus has been praised for prompt following and understanding user intentions, Gemini 2.5 Pro stands out for its price-to-performance ratio. Early user experiences suggest o3-pro might not always be worth the expense due to its speed, except for research purposes. Some users have suggested that o3-pro hallucinates modestly less, though this is still being debated.
Recommended read:
References :
- bsky.app: the OpenAI API is back to running at 100% again, plus we dropped o3 prices by 80% and launched o3-pro - enjoy!
- the-decoder.com: OpenAI cuts o3 model prices by 80% and launches o3-pro today
- AI News | VentureBeat: OpenAI launches o3-pro AI model, offering increased reliability and tool use for enterprises — while sacrificing speed
- Maginative: OpenAI’s new o3-pro model is now available in ChatGPT and the API, offering top-tier performance in math, science, and coding—at a dramatically lower price.
- THE DECODER: OpenAI has lowered the price of its o3 language model by 80 percent, CEO Sam Altman said. The article appeared first on The Decoder.
- AI News | VentureBeat: OpenAI announces 80% price drop for o3, it’s most powerful reasoning model
- www.cnbc.com: The figure includes sales from the company’s consumer products, ChatGPT business products and its application programming interface, or API.
- Latent.Space: OpenAI dropped o3 pricing 80% today and launched o3-pro. Ben Hylak of Raindrop.ai returns with the world's first early review.
- siliconangle.com: OpenAI’s newest reasoning model o3-pro surpasses rivals on multiple benchmarks, but it’s not very fast
- SiliconANGLE: Silicon Angle reports on OpenAI’s newest reasoning model o3-pro surpassing rivals.
- bsky.app: OpenAI has launched o3-pro. The new model is available to ChatGPT Pro and Team subscribers and in OpenAI’s API now, while Enterprise and Edu subscribers will get access next week. If you use reasoning models like o1 or o3, try o3-pro, which is much smarter and better at using external tools.
- The Algorithmic Bridge: OpenAI o3-Pro Is So Good That I Can’t Tell How Good It Is
- Windows Report: OpenAI rolls out new o3-pro AI model to ChatGPT Pro subscribers
- Windows Report: OpenAI Rolls out new o3-pro AI Model to ChatGPT Pro Subscribers
- www.indiatoday.in: OpenAI introduces O3 PRO for ChatGPT, highlighting significant improvements in performance and cost-efficiency.
- www.marketingaiinstitute.com: [The AI Show Episode 153]: OpenAI Releases o3-Pro, Disney Sues Midjourney, Altman: “Gentle Singularity†Is Here, AI and Jobs & News Sites Getting Crushed by AI Search
- datafloq.com: OpenAI is now considered another name of innovation in the field of AI, and with the launch of OpenAI o3, this claim is becoming stronger.
- composio.dev: OpenAI finally unveiled their much expensive O3, the O3-Pro. The model is available in their API and Pro plan, which costs $200
- Composio: OpenAI finally unveiled their much expensive O3, the O3-Pro. The model is available in their API and Pro plan, which costs $200
- Last Week in AI: OpenAI introduces O3 PRO for ChatGPT, highlighting significant improvements in performance and cost-efficiency.
- Last Week in AI: OpenAI adds o3 Pro to ChatGPT and drops o3 price by 80 per cent, ProRL: Prolonged Reinforcement Learning Expands Reasoning Boundaries
@the-decoder.com
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OpenAI is actively benchmarking its language models, including o3 and o4-mini, against competitors like Gemini 2.5 Pro, to evaluate their performance in reasoning and tool use efficiency. Benchmarks like the Aider polyglot coding test show that o3 leads in some areas, achieving a new state-of-the-art score of 79.60% compared to Gemini 2.5's 72.90%. However, this performance comes at a higher cost, with o3 being significantly more expensive. O4-mini offers a slightly more balanced price-performance ratio, costing less than o3 while still surpassing Gemini 2.5 on certain tasks. Testing reveals Gemini 2.5 excels in context awareness and iterating on code, making it preferable for real-world use cases, while o4-mini surprisingly excelled in competitive programming.
Open AI have just launched its GPT-Image-1 model for image generation to developers via API. Previously, this model was only accessible through ChatGPT. The versatility of the model means that it can create images across diverse styles, custom guidelines, world knowledge, and accurately render text. The company's blog post said that this unlocks countless practical applications across multiple domains.
Several enterprises and startups are already incorporating the model for creative projects, products, and experiences. Image processing with GPT-Image-1 is billed by tokens. Text input tokens, or the prompt text, will cost $5 per 1 million tokens. Image input tokens will be $10 per million tokens, while image output tokens, or the generated image, will be a whopping $40 per million tokens. Depending on the selected image quality,costs typically range from $0.02 to $0.19 per image.
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@simonwillison.net
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OpenAI has recently unveiled its latest AI reasoning models, the o3 and o4-mini, marking a significant step forward in the development of AI agents capable of utilizing tools effectively. These models are designed to pause and thoroughly analyze questions before providing a response, enhancing their reasoning capabilities. The o3 model is presented as OpenAI's most advanced in this category, demonstrating superior performance across various benchmarks, including math, coding, reasoning, science, and visual understanding. Meanwhile, the o4-mini model strikes a balance between cost-effectiveness, speed, and overall performance, offering a versatile option for different applications.
OpenAI's o3 and o4-mini are equipped with the ability to leverage tools within the ChatGPT environment, such as web browsing, Python code execution, image processing, and image generation. This integration allows the models to augment their capabilities by cropping or transforming images, searching the web for relevant information, and analyzing data using Python, all within their thought process. A variant of o4-mini, named "o4-mini-high," is also available, catering to users seeking enhanced performance. These models are accessible to subscribers of OpenAI's Pro, Plus, and Team plans, reflecting the company's commitment to providing advanced AI tools to a wide range of users.
Interestingly, the system card for o3 and o4-mini shows that the o3 model tends to make more claims overall. This can lead to both more accurate and more inaccurate claims, including hallucinations, compared to earlier models like o1. OpenAI's internal PersonQA benchmark shows that the hallucination rate increases from 0.16 for o1 to 0.33 for o3. The o3 and o4-mini models also exhibit a limited capability to "sandbag," which, in this context, refers to the model concealing its full capabilities to better achieve a specific goal. Further research is necessary to fully understand the implications of these observations.
Recommended read:
References :
- Last Week in AI: OpenAI's new GPT-4.1 AI models focus on coding, OpenAI launches a pair of AI reasoning models, o3 and o4-mini, Google's newest Gemini AI model focuses on efficiency, and more!
- Simon Willison's Weblog: Wrote up some notes on the o3/o4-mini system card, including my frustration at "sandbagging" joining the ever-growing collection of AI terminology with more than one competing definition
- Towards AI: TAI#149: OpenAI’s Agentic o3; New Open Weights Inference Optimized Models (DeepMind Gemma, Nvidia Nemotron-H)
- composio.dev: OpenAI o3 and o4-mini are out. They are two reasoning state-of-the-art models. They’re expensive, multimodal, and super efficient at tool use. Significantly,
- pub.towardsai.net: This week, OpenAI finally released its anticipated o3 and o4-mini models, shifting the focus towards AI agents that skillfully use tools.
- Composio: OpenAI o3 and o4-mini are out. They are two reasoning state-of-the-art models. They’re expensive, multimodal, and super efficient at tool use. Significantly, The post first appeared on.
- insideAI News: Dataiku Brings AI Agent Creation to AI Platform
- techstrong.ai: AI Leadership Insights: Tracking and Ranking AI Agents
Chris McKay@Maginative
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OpenAI has released its latest AI models, o3 and o4-mini, designed to enhance reasoning and tool use within ChatGPT. These models aim to provide users with smarter and faster AI experiences by leveraging web search, Python programming, visual analysis, and image generation. The models are designed to solve complex problems and perform tasks more efficiently, positioning OpenAI competitively in the rapidly evolving AI landscape. Greg Brockman from OpenAI noted the models "feel incredibly smart" and have the potential to positively impact daily life and solve challenging problems.
The o3 model stands out due to its ability to use tools independently, which enables more practical applications. The model determines when and how to utilize tools such as web search, file analysis, and image generation, thus reducing the need for users to specify tool usage with each query. The o3 model sets new standards for reasoning, particularly in coding, mathematics, and visual perception, and has achieved state-of-the-art performance on several competition benchmarks. The model excels in programming, business, consulting, and creative ideation.
Usage limits for these models vary, with o3 at 50 queries per week, and o4-mini at 150 queries per day, and o4-mini-high at 50 queries per day for Plus users, alongside 10 Deep Research queries per month. The o3 model is available to ChatGPT Pro and Team subscribers, while the o4-mini models are used across ChatGPT Plus. OpenAI says o3 is also beneficial in generating and critically evaluating novel hypotheses, especially in biology, mathematics, and engineering contexts.
Recommended read:
References :
- Simon Willison's Weblog: OpenAI are really emphasizing tool use with these: For the first time, our reasoning models can agentically use and combine every tool within ChatGPT—this includes searching the web, analyzing uploaded files and other data with Python, reasoning deeply about visual inputs, and even generating images. Critically, these models are trained to reason about when and how to use tools to produce detailed and thoughtful answers in the right output formats, typically in under a minute, to solve more complex problems.
- the-decoder.com: OpenAI’s new o3 and o4-mini models reason with images and tools
- venturebeat.com: OpenAI launches o3 and o4-mini, AI models that ‘think with images’ and use tools autonomously
- www.analyticsvidhya.com: o3 and o4-mini: OpenAI’s Most Advanced Reasoning Models
- www.tomsguide.com: OpenAI's o3 and o4-mini models
- Maginative: OpenAI’s latest models—o3 and o4-mini—introduce agentic reasoning, full tool integration, and multimodal thinking, setting a new bar for AI performance in both speed and sophistication.
- THE DECODER: OpenAI’s new o3 and o4-mini models reason with images and tools
- Analytics Vidhya: o3 and o4-mini: OpenAI’s Most Advanced Reasoning Models
- www.zdnet.com: These new models are the first to independently use all ChatGPT tools.
- The Tech Basic: OpenAI recently released its new AI models, o3 and o4-mini, to the public. Smart tools employ pictures to address problems through pictures, including sketch interpretation and photo restoration.
- thetechbasic.com: OpenAI’s new AI Can “See†and Solve Problems with Pictures
- www.marktechpost.com: OpenAI Introduces o3 and o4-mini: Progressing Towards Agentic AI with Enhanced Multimodal Reasoning
- MarkTechPost: OpenAI Introduces o3 and o4-mini: Progressing Towards Agentic AI with Enhanced Multimodal Reasoning
- analyticsindiamag.com: Access to o3 and o4-mini is rolling out today for ChatGPT Plus, Pro, and Team users.
- THE DECODER: OpenAI is expanding its o-series with two new language models featuring improved tool usage and strong performance on complex tasks.
- gHacks Technology News: OpenAI released its latest models, o3 and o4-mini, to enhance the performance and speed of ChatGPT in reasoning tasks.
- www.ghacks.net: OpenAI Launches o3 and o4-Mini models to improve ChatGPT's reasoning abilities
- Data Phoenix: OpenAI releases new reasoning models o3 and o4-mini amid intense competition. OpenAI has launched o3 and o4-mini, which combine sophisticated reasoning capabilities with comprehensive tool integration.
- Shelly Palmer: OpenAI Quietly Reshapes the Landscape with o3 and o4-mini. OpenAI just rolled out a major update to ChatGPT, quietly releasing three new models (o3, o4-mini, and o4-mini-high) that offer the most advanced reasoning capabilities the company has ever shipped.
- THE DECODER: Safety assessments show that OpenAI's o3 is probably the company's riskiest AI model to date
- shellypalmer.com: OpenAI Quietly Reshapes the Landscape with o3 and o4-mini
- BleepingComputer: OpenAI details ChatGPT-o3, o4-mini, o4-mini-high usage limits
- TestingCatalog: OpenAI’s o3 and o4‑mini bring smarter tools and faster reasoning to ChatGPT
- simonwillison.net: Introducing OpenAI o3 and o4-mini
- bdtechtalks.com: What to know about o3 and o4-mini, OpenAI’s new reasoning models
- bdtechtalks.com: What to know about o3 and o4-mini, OpenAI’s new reasoning models
- thezvi.wordpress.com: OpenAI has finally introduced us to the full o3 along with o4-mini. Greg Brockman (OpenAI): Just released o3 and o4-mini! These models feel incredibly smart. We’ve heard from top scientists that they produce useful novel ideas. Excited to see their …
- thezvi.wordpress.com: OpenAI has upgraded its entire suite of models. By all reports, they are back in the game for more than images. GPT-4.1 and especially GPT-4.1-mini are their new API non-reasoning models.
- felloai.com: OpenAI has just launched a brand-new series of GPT models—GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano—that promise major advances in coding, instruction following, and the ability to handle incredibly long contexts.
- Interconnects: OpenAI's o3: Over-optimization is back and weirder than ever
- www.ishir.com: OpenAI has released o3 and o4-mini, adding significant reasoning capabilities to its existing models. These advancements will likely transform the way users interact with AI-powered tools, making them more effective and versatile in tackling complex problems.
- www.bigdatawire.com: OpenAI released the models o3 and o4-mini that offer advanced reasoning capabilities, integrated with tool use, like web searches and code execution.
- Drew Breunig: OpenAI's o3 and o4-mini models offer enhanced reasoning capabilities in mathematical and coding tasks.
- TestingCatalog: OpenAI’s o3 and o4-mini bring smarter tools and faster reasoning to ChatGPT
- www.techradar.com: ChatGPT model matchup - I pitted OpenAI's o3, o4-mini, GPT-4o, and GPT-4.5 AI models against each other and the results surprised me
- www.techrepublic.com: OpenAI’s o3 and o4-mini models are available now to ChatGPT Plus, Pro, and Team users. Enterprise and education users will get access next week.
- Last Week in AI: OpenAI’s new GPT-4.1 AI models focus on coding, OpenAI launches a pair of AI reasoning models, o3 and o4-mini, Google’s newest Gemini AI model focuses on efficiency, and more!
- techcrunch.com: OpenAI’s new reasoning AI models hallucinate more.
- computational-intelligence.blogspot.com: OpenAI's new reasoning models, o3 and o4-mini, are a step up in certain capabilities compared to prior models, but their accuracy is being questioned due to increased instances of hallucinations.
- www.unite.ai: unite.ai article discussing OpenAI's o3 and o4-mini new possibilities through multimodal reasoning and integrated toolsets.
- : On April 16, 2025, OpenAI released upgraded versions of its advanced reasoning models.
- Digital Information World: OpenAI’s Latest o3 and o4-mini AI Models Disappoint Due to More Hallucinations than Older Models
- techcrunch.com: TechCrunch reports on OpenAI's GPT-4.1 models focusing on coding.
- Analytics Vidhya: o3 vs o4-mini vs Gemini 2.5 pro: The Ultimate Reasoning Battle
- THE DECODER: OpenAI's o3 achieves near-perfect performance on long context benchmark.
- the-decoder.com: OpenAI's o3 achieves near-perfect performance on long context benchmark
- www.analyticsvidhya.com: AI models keep getting smarter, but which one truly reasons under pressure? In this blog, we put o3, o4-mini, and Gemini 2.5 Pro through a series of intense challenges: physics puzzles, math problems, coding tasks, and real-world IQ tests.
- Simon Willison's Weblog: This post explores the use of OpenAI's o3 and o4-mini models for conversational AI, highlighting their ability to use tools in their reasoning process. It also discusses the concept of
- Simon Willison's Weblog: The benchmark score on OpenAI's internal PersonQA benchmark (as far as I can tell no further details of that evaluation have been shared) going from 0.16 for o1 to 0.33 for o3 is interesting, but I don't know if it it's interesting enough to produce dozens of headlines along the lines of "OpenAI's o3 and o4-mini hallucinate way higher than previous models"
- techstrong.ai: Techstrong.ai reports OpenAI o3, o4 Reasoning Models Have Some Kinks.
- www.marktechpost.com: OpenAI Releases a Practical Guide to Identifying and Scaling AI Use Cases in Enterprise Workflows
- Towards AI: OpenAI's o3 and o4-mini models have demonstrated promising improvements in reasoning tasks, particularly their use of tools in complex thought processes and enhanced reasoning capabilities.
- Analytics Vidhya: In this article, we explore how OpenAI's o3 reasoning model stands out in tasks demanding analytical thinking and multi-step problem solving, showcasing its capability in accessing and processing information through tools.
- pub.towardsai.net: TAI#149: OpenAI’s Agentic o3; New Open Weights Inference Optimized Models (DeepMind Gemma, Nvidia…
- composio.dev: OpenAI o3 vs. Gemini 2.5 Pro vs. o4-mini
- Composio: OpenAI o3 and o4-mini are out. They are two reasoning state-of-the-art models. They’re expensive, multimodal, and super efficient at tool use.
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