OpenAI: GPT-5.1 Codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Cheapest input
$1.07
$/MTok · models.dev
Cheapest output
$8.50
$/MTok
Context
400K
tokens
Offers
24
3 sources
Offers
Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.
| Source | Provider | Input | Output | Cache read | Context |
|---|---|---|---|---|---|
| models.devcheapestgpt-5.1-codex | OpenCode Zen | $1.07 | $8.50 | $0.107 | 400K |
| models.devopenai/gpt-5.1-codex | Poe | $1.10 | $9 | $0.11 | 400K |
| models.devgpt-5.1-codex | Jiekou.AI | $1.13 | $9 | $0 | 400K |
| models.devopenai/gpt-5.1-codex | Cloudflare | $1.25 | $10 | $0.125 | 400K |
| models.devopenai/gpt-5.1-codex | Impossibl | $1.25 | $10 | $0.125 | 400K |
| models.devopenai/gpt-5.1-codex | Kilo Gateway | $1.25 | $10 | $0.13 | 400K |
| models.devopenai/gpt-5.1-codex | NanoGPT | $1.25 | $10 | $0 | 400K |
| OpenRouteropenai/gpt-5.1-codex | OpenRouter | $1.25 | $10 | $0.13 | 400K |
| models.devopenai/gpt-5.1-codex | OrcaRouter | $1.25 | $10 | $0.125 | 400K |
| models.devopenai/gpt-5.1-codex | Requesty | $1.25 | $10 | $0.125 | 400K |
| models.devopenai/gpt-5.1-codex | Vercel AI Gateway | $1.25 | $10 | $0.13 | 400K |
| models.devopenai/gpt-5.1-codex | ZenMux | $1.25 | $10 | $0.12 | 400K |
| models.devgpt-5.1-codex | Abacus | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | AIHubMix | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | Azure | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | Azure | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | Helicone | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | LLM Gateway | $1.25 | $10 | $0.125 | 400K |
| models.devgpt-5.1-codex | Vivgrid | $1.25 | $10 | $0.125 | 400K |
| LiteLLMgpt-5.1-codex | — | $1.25 | $10 | $0.125 | — |
| LiteLLMglobal/gpt-5.1-codex | — | $1.25 | $10 | $0.125 | — |
| LiteLLMazure/eu/gpt-5.1-codex | — | $1.38 | $11 | $0.14 | — |
| LiteLLMeu/gpt-5.1-codex | — | $1.38 | $11 | $0.14 | — |
| LiteLLMus/gpt-5.1-codex | — | $1.38 | $11 | $0.14 | — |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- In: pdf
- In: audio
- Out: text
- Out: image
- Out: audio
Knowledge cutoff: 2024-09-30Released: 2025-11-13Family: gpt-codex