Gpt 5 1 Codex Max costs $1.25/1M input tokens and $10.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 400K tokens context window. o10 lists Gpt 5 1 Codex Max on OpenRouter at routing band C3. API slug openai-gpt-5-1-codex-max. Verify list prices against the venue you call.
Last updated: 2026-06-27. Full catalog. Reference prices are dated snapshots. Compare total cost and measured task quality before choosing a route.
Gpt 5 1 Codex Max is a chat model from openai (slug: openai-gpt-5-1-codex-max). Pick Gpt 5 1 Codex Max when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. Published input pricing starts at $1.25/1M tokens. Context window: 400K tokens.
Catalog snapshot 2026-06-27.
Pick Gpt 5 1 Codex Max when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. Gpt 5 1 Codex Max has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
Gpt 5 1 Codex Max has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
Gpt 5 1 Codex Max costs $1.25/1M input tokens and $10.00/1M output tokens in the gateway catalog snapshot (2026-06-27). Endpoint pricing may differ by fulfillment host.
Sourced from gateway catalog snapshot.
Gpt 5 1 Codex Max is configured on OpenRouter. Known host IDs: openrouter: openrouter/openai/gpt-5.1-codex-max. This model is routable through o10 eval-gated routing.
Gpt 5 1 Codex Max supports a 400K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
Gpt 5 1 Codex Max is classified at o10 routing band C3. Bands group models by cost tier and eval profile: C0 (economy), C1 (standard), C2 (capable), C3/C4 (frontier). Production routing is enabled for this slug.
Gpt 5 1 Codex Max is attributed to source provider openai in the o10 catalog. Fulfillment hosts (OpenRouter) supply API access; list pricing may differ by venue.
Gpt 5 1 Codex Max in the o10 unified catalog.
| Field | Value |
|---|---|
| o10 slug | `openai-gpt-5-1-codex-max` |
| Type | text |
| Band | C3 |
| Routable | Yes |
| Source provider | openai |
| Primary host | OpenRouter |
| Gateway ID | `openai/gpt-5.1-codex-max` |
| Context window | 400,000 tokens |
| Released | 2025-11-19 |
Gateway snapshot pricing for Gpt 5 1 Codex Max.
| Unit | Price |
|---|---|
| Input | $1.25/1M tokens |
| Output | $10/1M tokens |
Upstream venues configured for Gpt 5 1 Codex Max.
| Host | Upstream model ID |
|---|---|
| openrouter | openrouter/openai/gpt-5.1-codex-max |
Endpoint-level pricing and latency from the gateway catalog.
| Provider | Input ($/1M) | Latency p50 | Uptime 1d |
|---|---|---|---|
| azure | $1.25 | 2608ms | 10000.0% |
| openai | $1.25 | 1201ms | 10000.0% |
Eval-gated model selection for this slug.
o10 slug: openai-gpt-5-1-codex-max. Band: C3. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) and [/kyi](/kyi) for governance.
Fulfillment catalog 2026-06-27. Gateway pricing joined where slug match exists.
Gpt 5 1 Codex Max costs $1.25/1M input tokens and $10.00/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.
Gpt 5 1 Codex Max supports 400K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Gpt 5 1 Codex Max (openai-gpt-5-1-codex-max) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.
Yes. Gpt 5 1 Codex Max is routable at band C3. Send model: "openai-gpt-5-1-codex-max" or use an o10 smart routing alias.
Use o10 slug "openai-gpt-5-1-codex-max" or gateway ID "openai/gpt-5.1-codex-max" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
o10 routes Gpt 5 1 Codex Max only when per-use-case evals clear at your quality floor. Band C3 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.