OpenAI
GPT-5.1-Codex-Max API prices by provider
openai/gpt-5.1-codex-max
1 inference providers serve this exact model through OpenRouter. Input and output rates are paired per endpoint; route tags may identify a region or sub-endpoint whose eligibility is not yet verified.
- Active endpoints
- 1 / 1
- Lowest at 1M in + 1M out
- $11.25
- Azure · standard tier
- Context up to
- 400K
- Latest price change
- None yet
- Rates unchanged since first record 2026-09-29
| Provider · route | Tier | Input / 1M | Output / 1M | Cache read | Cache write | Context | Tools | 1M + 1M | Status | Price since |
|---|---|---|---|---|---|---|---|---|---|---|
Azure azure · unknown | Standard | $1.25 | $10.00 | $0.125 | — | 400K | Yes | $11.25 | Active | Since |
“—” means no rate is published for that endpoint; it is excluded from estimates, not counted as zero. “Since” is the first record with no rate change observed; “Changed” is the latest observed rate or billing change. Per-request fees: not published for any endpoint here. Status is the upstream operational flag, not a measured uptime.