GPT-5.1 Codex Max
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Cheapest input
$1.25
$/MTok · models.dev
Cheapest output
$10
$/MTok
Context
400K
tokens
Offers
1
1 source
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.devcheapestopenai-gpt-5.1-codex-max | DigitalOcean | $1.25 | $10 | $0.125 | 400K |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- Out: text
Knowledge cutoff: 2024-09-30Released: 2025-11-13Family: gpt-codex