DEPRECATED
Retired 2026-07-23 — 69 days ago. Requests to this identifier are expected to fail. The provider names gpt-5.6-sol as the replacement. Sources disagree on: context_tokens.
state=dead sunset=2026-07-23 days_remaining=-69 severity=critical sources=docs,litellm,openrouter evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=gpt-5.6-sol corroborated=yes divergent_fields=context_tokens checked=2026-09-30 15:40Z
openai/gpt-5.1-codex-max
Vendor: openai. Tracked by 3 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| docs | gpt-5.1-codex-max | — | — | — | — | 2026-07-23 |
| litellm | azure/gpt-5.1-codex-max | 272,000 | 128,000 | $1.25 | $10 | 2026-07-23 |
| openrouter | openai/gpt-5.1-codex-max | 400,000 | 128,000 | $1.25 | $10 | — |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| low | modified | chatgpt/gpt-5.1-codex-max: capabilities gained reasoning | 2026-09-26 |
| info | deprecated | gpt-5.1-codex-max: deprecation announced for 2026-07-23 (date already passed) | 2026-09-25 |
| low | added | new model gpt-5.1-codex-max (400,000 ctx) | 2026-09-24 |
| medium | removed | [one catalog only — docs, litellm, openrouter still list it] gpt-5.1-codex-max is no longer listed by this source — calls to it are expected to fail | 2026-09-23 |
| low | modified | openrouter/openai/gpt-5.1-codex-max: capabilities gained web_search | 2026-09-19 |
| low | modified | openrouter/openai/gpt-5.1-codex-max: capabilities gained response_schema | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5.1-codex-max: deprecation announced for 2027-05-18 — in 242 days | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5.1-codex-max: deprecation announced for 2027-05-18 — in 242 days | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5.1-codex-max: retires 2027-05-18 (in 242 days) | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5.1-codex-max: retires 2027-05-18 (in 242 days) | 2026-09-18 |
| low | added | new model azure/eu/gpt-5.1-codex-max | 2026-09-16 |
| low | added | new model azure/us/gpt-5.1-codex-max | 2026-09-16 |
| critical | deprecated | gpt-5.1-codex-max: deprecation announced for 2026-07-23 (date already passed) | 2026-08-12 |
| medium | deprecated | azure/gpt-5.1-codex-max: deprecation announced for 2027-05-18 — in 279 days | 2026-08-12 |
| medium | deprecated | azure/gpt-5.1-codex-max: retires 2027-05-18 (in 279 days) | 2026-08-12 |
| critical | deprecated | gpt-5.1-codex-max: retires 2026-07-23 (9 days ago) | 2026-08-01 |
| low | added | new model gpt-5.1-codex-max | 2026-08-01 |