OpenAI releases GPT-5.1-Codex-Max

GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...

Type: MODEL_LAUNCH
Detection: listing
Confidence: medium
Status

Related entities

ModelGPT-5.1-Codex-Max CompanyOpenAI

Primary source

OpenRouter models API · openrouter.ai/openai/gpt-5.1-codex-max ↗

Structured listing of 400+ hosted models: prices per token, context length, modalities, supported parameters and listing date. Prices are OpenRouter's listed prices, which usually mirror first-party pricing but can differ.