GPT-5.5

OpenAI released GPT-5.5, which completes tasks at the same difficulty level faster than GPT-5.4 while using significantly fewer tokens. The model is available to ChatGPT Plus, Pro, Business, and Enterprise users, with API access delayed due to required safeguards.

OpenAI has released GPT-5.5, its latest frontier model, according to NVIDIA. The model powers Codex, OpenAI's agentic coding application, running on NVIDIA GB200 NVL72 rack-scale systems.

OpenAI released GPT-5.5 on April 23, 2026, seven weeks after GPT-5.4. The model features a 400K context window in Codex and claims improvements in multi-step tasks, agentic coding, and computer use, though at higher pricing than its predecessor.

OpenAI released GPT-5.5 on April 23, 2026, positioning it as a step toward agentic computing and a unified 'superapp' combining ChatGPT, Codex, and browser capabilities. The company claims the model outperforms GPT-5.4, Google's Gemini 3.1 Pro, and Anthropic's Claude Opus 4.5 across multiple benchmarks.

OpenAI has released GPT-5.5, one month after GPT-5.4, claiming improved performance on coding tasks and reduced token usage in its Codex platform. The model rolls out April 24 to paid ChatGPT tiers.

OpenAI released GPT-5.5, its latest AI model with enhanced coding, computer operation, and research capabilities. The model is rolling out to paid subscribers in ChatGPT and Codex, with API access coming soon.

OpenAI posted the cryptic message 'NS41' on X, which decodes to '5.5' through Base64 encoding or mathematical interpretation. The teaser suggests an imminent announcement for GPT-5.5, though no release date, pricing, or technical specifications have been disclosed.