Yes. Creative writing (GPT-4.5 is better) and research (o3 is better).
LLMS
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GPT-5 Now Available in Cursor Coding Editor
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GPT-5 is now available in Cursor. It’s the most intelligent coding model our team has tested. We're launching it for free for the time being. Enjoy!
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AI Excellence in Debugging and Complex Logic Problem Solving
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While thorough, it’s especially good at debugging, codebase understanding, and the most difficult logic problems.
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Snorkel AI Leaderboard Benchmarks Now Available
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Check out our leaderboard to see all of our benchmarks: http://
leaderboard.snorkel.ai -
GPT-5 Performance Trails Grok-4 Thinking in ARC-AGI-2 Benchmark
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GPT-5 about 6% below Grok-4 thinking in ARC-AGI-2 GPT-5 ~10%
Grok-4 thinking~16% -
API Reasoning Traces: Getting Summaries with GPT-5
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My post initially complained about the lack of reasoning traces in the API, but it turns out I was wrong about that! You can get back reasoning summaries with "reasoning": {"summary": "auto"} – I've updated that section of my post to describe that here: https://
simonwillison.net/2025/Aug/7/gpt
-5/#thinking-traces-in-the-api
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GPT-5 now available on Poe platform with API access
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You can try GPT-5 at https://
poe.com/GPT-5, mini at https://
poe.com/GPT-5-mini, and the nano version at https://
poe.com/GPT-5-nano. You can also access these new models directly through our new API. (2/2) -
OpenAI releases GPT-5 on Poe platform
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GPT-5 is here! We’re excited to make OpenAI’s most advanced model ever available on Poe the morning of its release. It aims to set a new standard for speed, accuracy, and reliability. (1/2)
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400K Token Context Window: New AI Model Capability Milestone
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400,000 token context window, consisting of a maximum of 128,000 output tokens and a maximum of 272,000 input tokens!
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Reasoning Summaries Now Available in API Updates
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Turns out I was wrong about that! You can get reasoning summaries back after all, I updated that section: