GPT-5.5 reaches SOTA results across key evals for agentic coding, computer use, tool use, advanced math, and cybersecurity: 82.7% on Terminal-Bench 2.0 and 78.7% on OSWorld-Verified. Rolling out in Codex and ChatGPT today. API coming soon! Full post:
TOOLS
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Positive sentiment expressed towards a tool
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GPT 5.5 is officially here! Some powerful benchmark numbers, topping Claude Opus 4.7 on coding, reasoning, and math. OpenAI says it matches GPT-5.4 speed at half the cost of competing frontier coding models. The frontier moved back to OpenAI today (for now).
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API Pricing Announcement: $5 per Million Input Tokens
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API pricing will be $5 per 1 million input tokens and $30 per 1 million output tokens, with a 1 million context window. (Remember, you will need less tokens per task than 5.4!)
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New Codex Features Coming Soon with Latest Model
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Also, a ton of new Codex features coming soon! Fun little bundle w/the new model.
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New AI Model Launches Today: Faster, More Token-Efficient
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It is smart and fast; per-token speed matches 5.4 and it uses significantly fewer tokens per task. In my experience, it "gets what to do". Rolling out today in ChatGPT and Codex. We are working with API customers on security and safeguards and plan to launch in API very soon.
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Nvidia Offers Free API Access to 80+ AI Models
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HOW IS NO ONE TALKING ABOUT THIS? @nvidia is quietly giving away free API access to 80+ top-tier AI models, via API and for FREE You can instantly use models like MiniMax, GLM, Kimi, DeepSeek, GPT-OSS and others, all through an OpenAI-compatible endpoint. Drop it directly
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GPT-5.5 Opens Entirely New Categories of Work
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That is what feels different.
GPT-5.5 doesn’t just make you faster at the work you already know how to do.
It makes entirely new categories of work feel possible. -
AI Model Creates and Deploys Flipper Zero Apps via USB
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In this example, it created apps for my Flipper Zero through a USB connection and pushed them successfully to the device.
— Pietro Schirano (@skirano) 23 avril 2026
Just an idea, a cable, and a model that could actually make it real. pic.twitter.com/uWCsr0ydElIn this example, it created apps for my Flipper Zero through a USB connection and pushed them successfully to the device. Just an idea, a cable, and a model that could actually make it real.
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GPT-5.5 Unlocks Vibe Hardware Era for AI Workflows
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GPT-5.5 is the highest leverage tool I have ever touched.
— Pietro Schirano (@skirano) 23 avril 2026
For the first time, I don’t feel limited by what a model can do. I feel limited only by what I can imagine.
Training workflows. Impossible optimizations. Hardware experiments over USB.
The vibe hardware era begins. https://t.co/0mUw3YoWySGPT-5.5 is the highest leverage tool I have ever touched. For the first time, I don’t feel limited by what a model can do. I feel limited only by what I can imagine. Training workflows. Impossible optimizations. Hardware experiments over USB. The vibe hardware era begins.
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GPT-5.5 Resolves Complex Code Conflicts in AGI Moment
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One day while testing GPT-5.5, I had my first taste of AGI.
We had a branch with hundreds of visual and front-end changes, plus complex refactors.
At the same time, main had changed a lot too.
Conflicts everywhere.