Cinco de Mayo arrived early this year.
6:31 AM · Apr 22, 2026 · 4.8K Views
OpenAI releases GPT-5.5 with inference improvements
OpenAI released GPT-5.5, delivering higher performance than GPT-5.4 at identical per-token latency. The GPT-5.5 API costs $5 per million input tokens and $30 per million output tokens, with 1 million token context window and 2-12x reduction from original GPT-3 API pricing. It tops Runescape benchmark using fletching and quest strategies, outperforms GPT-5.4 Pro in Excel modeling with 60% faster processing. Codex integrates GPT-5.5 with browser control, Google Sheets support, OS dictation, and auto-review; Sam Altman announced bundling.
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OpenAI@OpenAI
Introducing GPT-5.5
A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done.
Now available in ChatGPT and Codex.
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