# GPT-5.1 Codex Max API prices

GPT-5.1 Codex Max (gpt-codex) — 400k context, 128k max output.
14 metered per-token offers from 14 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| Ofox | $1 | $8 | $0.104 | 256k |
| Poe | $1.1 | $9 | $0.11 | 400k |
| Jiekou.AI | $1.125 | $9 | — | 400k |
| Abacus | $1.25 | $10 | — | 400k |
| Azure | $1.25 | $10 | $0.125 | 400k |
| Azure Cognitive Services | $1.25 | $10 | $0.125 | 400k |
| DigitalOcean | $1.25 | $10 | $0.125 | 400k |
| Eden AI | $1.25 | $10 | $0.125 | 272k |
| Kilo Gateway | $1.25 | $10 | $0.125 | 400k |
| OpenCode Zen | $1.25 | $10 | $0.125 | 400k |
| OpenRouter | $1.25 | $10 | $0.125 | 400k |
| Vercel AI Gateway | $1.25 | $10 | $0.125 | 400k |
| Vivgrid | $1.25 | $10 | $0.125 | 400k |
| NanoGPT | $2.5 | $20 | $0.25 | 400k |

## Summary

- Cheapest input: $1 per 1M tokens (Ofox)
- Cheapest output: $8 per 1M tokens (Ofox)
- First-party: not listed separately
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2025-11-13
- Inputs: image, pdf, text

## FAQ

### What is the cheapest GPT-5.1 Codex Max API?

As of Oct 4, 2026, Ofox has the lowest GPT-5.1 Codex Max output price at $8 per 1M tokens, and Ofox has the lowest input price at $1 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How many providers offer GPT-5.1 Codex Max?

14 providers list GPT-5.1 Codex Max on Sovyron; 14 of them sell it at a metered per-token price.

### Is GPT-5.1 Codex Max free?

No provider in the Sovyron catalog lists a free tier for GPT-5.1 Codex Max.

### What is the context window of GPT-5.1 Codex Max?

GPT-5.1 Codex Max supports a 400k-token context window and up to 128k output tokens.

HTML page: https://sovyron.com/models/gpt-5-1-codex-max/
Full dataset: https://sovyron.com/data/catalog.json