openai / text-generation API-only released 2025-11-13

GPT-5.1-Codex-Mini

GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex

Input / 1M
$0.25
Output / 1M
$2.00
Context
400K
AA Intelligence
20.4
Closed weights — available only as a hosted API image + text → text View on OpenRouter ↗

Pricing

via OpenRouter · USD per 1M tokens · synced 2026-10-24
$0.25
input / 1M
$2.00
output / 1M
$0.03
cached input / 1M
$2.25
1M in + 1M out
Context window
400,000 tokens
Max output
128,000 tokens
Providers
1
Cheapest provider
Azure · $0.25 / $2.00
Best throughput
—
AA Intelligence / Coding / Agentic
20.4 / — / —
✓ Tool calling ✓ Reasoning ✓ Structured outputs ✓ Image input ✗ File input ✗ Audio input ✓ Prompt caching

Price history

tracking started — chart appears after 7 days of snapshots (6 recorded)
Current: $0.25 input · $2.00 output per 1M tokens

Benchmarks

Third-party indices as published through OpenRouter — Artificial Analysis and Design Arena. Not measured by us.

AA Intelligence Index
20.4
AA Coding Index
—
AA Agentic Index
—
Design Arena
CategoryEloWin %Rank
3d 988 32.8% #114
asciiart 1105 43% #59
codecategories 1094 41.5% #106
dataviz 1097 40.6% #101
gamedev 1092 43.4% #101
svg 978 35.3% #89
uicomponent 1078 41% #102
website 1111 42.9% #108

Providers

1 provider · per 1M tokens · last 30 min metrics
ProviderQuantContextInputOutputUptimeTok/s
Azure unknown 400K $0.25 $2.00 100% —
Provider data from OpenRouter's endpoint listing, refreshed daily.

Specifications

Organisation
openai
Released on OpenRouter
2025-11-13
Context window
400,000 tokens
Max output
128,000 tokens
Input
image, text
Output
text
Tokenizer
GPT
Moderated by provider
No
OpenRouter id
openai/gpt-5.1-codex-mini
Compare with
Prices, context and providers from the public OpenRouter API, snapshotted daily; benchmark indices from Artificial Analysis. See /methodology.