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).
TECHNOLOGY
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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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Pareto Frontiers: Extended Context and Improved Inference Speed
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looks like new Pareto frontiers across everything:
— swyx 🇸🇬 (@swyx) 23 avril 2026
– Context: 400K context in Codex and a 1M in API
– API Pricing: $5/m input and $30/m output tokens.
– Codex improved its own inference speed 20% lol
– First generation co-designed with GB200 and GB300 NVL72
– 82.7% on… https://t.co/J5CL5fKmsq pic.twitter.com/nJG1vubSdNlooks like new Pareto frontiers across everything: – Context: 400K context in Codex and a 1M in API
– API Pricing: $5/m input and $30/m output tokens. – Codex improved its own inference speed 20% lol – First generation co-designed with GB200 and GB300 NVL72 – 82.7% on -
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. -
GPT-5.5 Demonstrates Significantly Enhanced Capabilities Over Previous
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When using GPT-5.5, it is instantly noticeable how much more powerful it is.
— Peter Gostev (@petergostev) 23 avril 2026
In Codex, I gave it a very complex prompt to create London Toy Railway with landmarks and seasons – it did an excellent job in one shot.
In the second half of the video you see GPT-5.4 – it was also… pic.twitter.com/zmAgrAsYilWhen using GPT-5.5, it is instantly noticeable how much more powerful it is. In Codex, I gave it a very complex prompt to create London Toy Railway with landmarks and seasons – it did an excellent job in one shot. In the second half of the video you see GPT-5.4 – it was also
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GPT-5.5 Review: Massive Leap Forward but Major Regression
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I’ve been using GPT-5.5 for the last few weeks. It’s a MASSIVE leap forward. But the weird thing is: for 99% of users, it probably won’t matter. And there's one BIG, incredibly frustrating regression. Read more in my review:
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Multi-Agent Orchestration Patterns in Agent Development Kit
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From Agents Skills to Systems: 5 Multi-Agent Orchestration Patterns in ADK 2.0 Check out my new article with @addyosmani covering how developers can build Multi-agent systems with Agent Development Kit 2.0
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IEEE Magazine Publication Paradox: Article From Future
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It's 2026. I received a copy of IEEE BITS magazine in the mail. It contains my robustness article that was accepted in 2025. The magazine date is September 2024, before I finished writing the article Separately, my toddler was excited to get a "book" in the mail ft. his dad
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Peak Technology in 1984: A Historical Computing Perspective
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this is what peak technology looked like in 1984
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Empowering Users with Best AI Tools and Compute Resources
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we love seeing our users win. we want to give you the best tools, lots of compute, and watch you do the magic.