GPT-5.1 Codex mini
openai/gpt-5.1-codex-miniCoding-optimized GPT model for repository edits, reviews, and agentic software work
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Context
256K
256,000 tokens
Max output
66K
65,536 tokens
Input
$0.25
per 1M tokens
Output
$2.00
per 1M tokens
Providers
17
17 listings
Intelligence
20.4
Intelligence Index
Pricing
USD per 1M tokens · listed by Ofox
| Token type | Standard |
|---|---|
| Input | $0.25 |
| Output | $2.00 |
| Cache read | $0.03 |
Lowest input price across providers: $0.22.
Capabilities
ReasoningYes
Effort: none, low, medium, high
Tool callYes
Structured outputYes
TemperatureNo
AttachmentsYes
Interleaved reasoningNo
Open weightsNo
ModeratedNo
Input
TextImage
Output
Text
Benchmarks
Published scores and Design Arena Elo
- Intelligence20.4#102 of 208
- CodingNot scored—
- AgenticNot scored—
- Arena1,066#103 of 128
Rankings
Position on each OneAtlas leaderboard
Providers · 17
17 listings
Ofox
NanoGPT
LLM Gateway
Vercel AI Gateway
Kilo Gateway
Eden AI
DevPass (LLM Gateway)
AIHubMix
Poe
OpenCode
OrcaRouter
ZenMux
Azure
Azure Cognitive Services
Helicone
Impossibl
Jiekou.AI| Provider | Model ID | Context | Input limit | Output | Input $ | Output $ | Reasoning $ | Cache read | Cache write | Audio in | Audio out | Reasoning | Tools | Structured | Temp. | Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AIHubMix | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Azure | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 14, 2025 |
| Azure Cognitive Services | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 14, 2025 |
| DevPass (LLM Gateway) | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Eden AI | azure/gpt-5.1-codex-mini | 272K | — | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Helicone | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Unknown | No | Nov 13, 2025 |
| Impossibl | openai/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Jiekou.AI | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.24 | $1.90 | — | $0.02 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Kilo Gateway | openai/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| LLM Gateway | azure/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | No | No | Nov 13, 2025 |
| NanoGPT | openai/gpt-5.1-codex-mini | 400K | 400K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | No | No | No | Nov 13, 2025 |
| Ofox | openai/gpt-5.1-codex-mini | 256K | — | 66K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| OpenCode | gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| OrcaRouter | openai/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | No | Nov 13, 2025 |
| Poe | openai/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.22 | $1.80 | — | $0.02 | — | — | — | Yes | Yes | Unknown | No | Nov 13, 2025 |
| Vercel AI Gateway | openai/gpt-5.1-codex-mini | 400K | 272K | 128K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Yes | Yes | Nov 13, 2025 |
| ZenMux | openai/gpt-5.1-codex-mini | 400K | — | 100K | $0.25 | $2.00 | — | $0.03 | — | — | — | Yes | Yes | Unknown | Yes | Nov 13, 2025 |