GPT-5.1-Codex-Max: Product update

Facts as of 13 Nov 2026, 14:53 UTC

Context window

400,000

Max output

128,000

Input

text · image

Output

text

Alex's take

Alex has not commented on this signal yet. When Alex posts about a signal, the post appears here and on the home page beside it.

Evidence links 5

• OpenCode · discovery
  evidence linkopencode.ai
• models.dev · catalogue
  evidence linkmodels.dev
• OpenRouter
  evidence linkopenrouter.ai
• OpenAI · model index
  evidence linkdevelopers.openai.com
• OpenAI · deprecations
  evidence linkplatform.openai.com

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Confirmed2 evidence links