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GPT-5.1 Codex mini

openai/gpt-5.1-codex-mini

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Input modalitiesT
Output modalitiesT
Source-linkedgpt-codexClosed weightsReleased 2025-11-13
Report data
Context window400K
Maximum output128K
Provider offers12
Knowledge cutoff2024-09-30
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputYes
AttachmentsYes
Temperature controlNo
Open weightsNo
Creator
OpenAI
Family
gpt-codex
Modalities
Image, Text
License
Not documented
Release date
2025-11-13
Model ID
openai/gpt-5.1-codex-mini
Market availability

Provider pricing

Report price →
Providers offering GPT-5.1 Codex mini
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
Poe logoPoeopenai/gpt-5.1-codex-mini400K$0.22$1.8$0.022R T ·
View
{
  "cache_read": 0.022,
  "input": 0.22,
  "output": 1.8
}
ZenMux logoZenMuxopenai/gpt-5.1-codex-mini400K$0.25$2$0.03R T ·
View
{
  "cache_read": 0.03,
  "input": 0.25,
  "output": 2
}
OpenAI logoOpenAIgpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
LLM Gateway logoLLM Gatewaygpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
OpenRouter logoOpenRouteropenai/gpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
AIHubMix logoAIHubMixgpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
Vercel AI Gateway logoVercel AI Gatewayopenai/gpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
Kilo Gateway logoKilo Gatewayopenai/gpt-5.1-codex-mini400K$0.25$2$0.025R T ·
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
Neon logoNeongpt-5-1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
Requesty logoRequestyopenai/gpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
OrcaRouter logoOrcaRouteropenai/gpt-5.1-codex-mini400K$0.25$2$0.025R T S
View
{
  "cache_read": 0.025,
  "input": 0.25,
  "output": 2
}
NanoGPT logoNanoGPTopenai/gpt-5.1-codex-mini400K$0.25$2R · ·
View
{
  "input": 0.25,
  "output": 2
}
Evidence

Published benchmark results

Design Arena: 3d vs top 8 models
Z.ai: GLM 5.2
1371.0
Claude Fable 5
1366.0
Anthropic: Claude Opus 4.6
1349.0
Kimi K2.6
1348.0
xAI: Grok 4.5
1338.0
Z.ai: GLM 5.1
1336.0
DeepSeek V4 Pro
1326.0
GPT-5.1 Codex mini
1062.0
Design Arena: asciiart vs top 8 models
Claude Fable 5
1374.0
Anthropic: Claude Opus 4.7
1324.0
Gemini 3.1 Pro Preview
1313.0
Anthropic: Claude Opus 4.8
1308.0
Gemini 3.5 Flash
1305.0
Anthropic: Claude Opus 4.6
1303.0
GPT-5.5
1296.0
GPT-5.1 Codex mini
1148.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1351.0
Claude Fable 5
1345.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1327.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
GPT-5.1 Codex mini
1136.0
Design Arena: dataviz vs top 8 models
Z.ai: GLM 5.1
1366.0
Claude Fable 5
1363.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1322.0
Anthropic: Claude Opus 4.7
1322.0
Anthropic: Claude Sonnet 4.6
1316.0
Z.ai: GLM 5.2
1316.0
GPT-5.1 Codex mini
1137.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1383.0
Z.ai: GLM 5.2
1353.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
Anthropic: Claude Opus 4.7
1336.0
MiMo-V2.5-Pro
1334.0
GPT-5.1 Codex mini
1154.0
Design Arena: svg vs top 8 models
Claude Fable 5
1365.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1278.0
GPT-5.5
1277.0
Anthropic: Claude Opus 4.7
1274.0
Z.ai: GLM 5.1
1273.0
GPT-5.1 Codex mini
1028.0
Design Arena: uicomponent vs top 8 models
Claude Fable 5
1401.0
Anthropic: Claude Opus 4.7
1359.0
Anthropic: Claude Opus 4.6
1343.0
Z.ai: GLM 5.2
1335.0
Z.ai: GLM 5.1
1331.0
Qwen: Qwen3.7 Max
1330.0
Anthropic: Claude Sonnet 4.6
1320.0
GPT-5.1 Codex mini
1128.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1338.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1325.0
Anthropic: Claude Sonnet 4.6
1320.0
Claude Sonnet 5
1314.0
GPT-5.1 Codex mini
1146.0