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openai/gpt-5.1-codex

GPT-5.1 Codex

Codex GPT for repository edits, code review, and practical software agents

This model's cache

This model page returns the exact headers below. The page and /api/models/openai--gpt-5.1-codex share the model:openai--gpt-5.1-codex tag, so invalidation stays scoped to this model.

Cache key/models/openai--gpt-5.1-codex
Cache-Controlpublic, max-age=300, stale-while-revalidate=3600
Cache-Tagcatalogmodel:openai--gpt-5.1-codex

Workers Cache derives the key from this path/query, plus the Worker entrypoint and current Worker version.

export const Route = createFileRoute('/models/$modelSlug')({
  headers: () => ({
    'Cache-Control': 'public, max-age=300, stale-while-revalidate=3600',
    'Cache-Tag': 'catalog,model:openai--gpt-5.1-codex',
  }),
})

Invalidate this cache tag

await ctx.cache.purge({ tags: ['model:openai--gpt-5.1-codex'] })

Use this when one model changes and you do not want to evict the whole catalog.

Gpt CodexReasoningTool callingStructured outputAttachments
Released
Nov 13, 2025
Last updated
Nov 13, 2025
Context window
400K tokens
Max output
128K tokens
Open weights
No
Family
Gpt Codex

Starts at

$1.1

per 1M input tokens

Output

$9

Sellers

10

No cart or checkout in this MVP — pick a provider below and open their docs when you're ready to use it.

Capabilities & modalities
Reasoning
Tool calling
Structured output
Attachments
InputText, Image
OutputText
Provider shelf
Where to get GPT-5.1 Codex

Sorted by lowest input price

ProviderInput / 1MOutput / 1MContext

Poe

openai/gpt-5.1-codex

$1.1$9400KDocs

Requesty

openai/gpt-5.1-codex

$1.25$10400KDocs

Vercel AI Gateway

openai/gpt-5.1-codex

$1.25$10400KDocs

ZenMux

openai/gpt-5.1-codex

$1.25$10400KDocs

OpenAI

gpt-5.1-codex

$1.25$10400KDocs

OrcaRouter

openai/gpt-5.1-codex

$1.25$10400KDocs

Cloudflare AI Gateway

openai/gpt-5.1-codex

$1.25$10400KDocs

Kilo Gateway

openai/gpt-5.1-codex

$1.25$10400KDocs

OpenRouter

openai/gpt-5.1-codex

$1.25$10400KDocs

NanoGPT

openai/gpt-5.1-codex

$1.25$10400KDocs
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