OpenAI released GPT-5.5, a faster and more token-efficient model, positioning it as a step toward a unified ChatGPT/Codex/browser 'super app.'
OpenAI released GPT-5.5 on Thursday, described as its 'smartest and most intuitive' model yet, with improvements in agentic reasoning and token efficiency. Greg Brockman framed it as a step toward a 'super app' combining ChatGPT, Codex, and an AI browser for enterprise and consumer use. GPT-5.5 is immediately available to Plus, Pro, Business, and Enterprise ChatGPT users, with GPT-5.5 Pro limited to Pro, Business, and Enterprise tiers. The release continues OpenAI's aggressive monthly cadence, following prior releases in June, December, and November.
GPT-5.5 claims better output per token than GPT-5.4, which directly affects inference costs and latency budgets in production apps. If the token efficiency claim holds, pipelines with heavy chaining or multi-step agentic tasks could see meaningful cost reduction without a model swap penalty. The Codex integration signal also hints at a unified coding + reasoning endpoint on the horizon — worth positioning for now.
Run your highest-volume prompt through GPT-5.5 via the OpenAI API and compare token count and response quality against your current GPT-4o or GPT-5.4 baseline — if you're seeing 15%+ token reduction on the same output quality, reprice your inference budget.
Open your terminal and set your API key: export OPENAI_API_KEY=your_key_here
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