Model prices / OpenAI / GPT-5.1 Codex Max
GPT-5.1 Codex Max
OpenAI · released 2025-11-13
No price from the maker itself is on record for GPT-5.1 Codex Max. The lowest of 14 providers is Jiekou.AI: $1.1875 per 1M input tokens and $9.5 per 1M output tokens (as of 2026-11-12). Context window: 400K tokens, up to 128K output tokens per request.
Price by providerUSD per 1M tokens
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
JJiekou.AILowestgpt-5.1-codex-max | $1.1875 | $9.5 | $0.1187 | Lowest | Official docs |
 Azuregpt-5.1-codex-max | $1.25 | $10 | $0.125 | Official docs | |
| Azure Cognitive Servicesgpt-5.1-codex-max | $1.25 | $10 | $0.125 | Official docs | |
EEden AIazure/ | $1.25 | $10 | $0.125 | Official docs | |
KKilo Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
OOfoxopenai/ | $1.25 | $10 | $0.13 | Official docs | |
 OpenCodegpt-5.1-codex-max | $1.25 | $10 | $0.125 | Official docs | |
 OpenRouteropenai/ | $1.25 | $10 | $0.125 | Official docs | |
 Vercel AI Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
NNanoGPTopenai/ | $2.5 | $20 | $0.25 | Official docs | |
 AI/ML APIopenai/ | $2.645 | $21.16 | $0.2645 | Official docs | |
 PoeDeprecatedopenai/ | $1.1 | $9 | $0.11 | Deprecated | Official docs |
2 more listings
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
AAbacusDeprecatedgpt-5.1-codex-max | $1.25 | $10 | — | Deprecated | Official docs |
VVivgridDeprecatedgpt-5.1-codex-max | $1.25 | $10 | $0.125 | Deprecated | Official docs |
Providers are those listed by models.dev. This site has not vetted them one by one; each provider's own page has the binding price.
About
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Description from models.dev.
Specs
- Type
- Text
- Context
- 400K
- Max output
- 128K
- Input
- Text, Image
- Output
- Text
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Knowledge cutoff
- 2024-09-30
- Open weights
- No
- Released
- 2025-11-13
Source
Prices and specs come from models.dev (MIT licence), updated 2026-11-12. Each provider's name links to its official docs. A provider priced at 0 usually includes the model in a subscription; it is not necessarily a free API.