Gpt 5.1 Thinking costs $1.25/1M input tokens and $10.00/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 400K tokens context window. o10 lists Gpt 5.1 Thinking on OpenAI at routing band C4. API slug gpt-5.1-thinking. 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 Thinking is a chat model from openrouter (slug: gpt-5.1-thinking). Pick Gpt 5.1 Thinking 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 Thinking 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 Thinking has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
Gpt 5.1 Thinking has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
Gpt 5.1 Thinking 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 Thinking is configured on OpenAI. Known host IDs: openai: openai/gpt-5.1-thinking. This model is routable through o10 eval-gated routing.
Gpt 5.1 Thinking supports a 400K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
Gpt 5.1 Thinking is classified at o10 routing band C4. 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 Thinking is attributed to source provider openrouter in the o10 catalog. Fulfillment hosts (OpenAI) supply API access; list pricing may differ by venue.
Gpt 5.1 Thinking in the o10 unified catalog.
| Field | Value |
|---|---|
| o10 slug | `gpt-5.1-thinking` |
| Type | text |
| Band | C4 |
| Routable | Yes |
| Source provider | openrouter |
| Primary host | OpenAI |
| Gateway ID | `openai/gpt-5.1-thinking` |
| Context window | 400,000 tokens |
| Released | 2025-11-12 |
Gateway snapshot pricing for Gpt 5.1 Thinking.
| Unit | Price |
|---|---|
| Input | $1.25/1M tokens |
| Output | $10/1M tokens |
Upstream venues configured for Gpt 5.1 Thinking.
| Host | Upstream model ID |
|---|---|
| openai | openai/gpt-5.1-thinking |
Endpoint-level pricing and latency from the gateway catalog.
| Provider | Input ($/1M) | Latency p50 | Uptime 1d |
|---|---|---|---|
| azure | $1.25 | 442.5ms | 10000.0% |
| openai | $1.25 | 1479ms | 9995.8% |
Eval-gated model selection for this slug.
o10 slug: gpt-5.1-thinking. Band: C4. 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 Thinking 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 Thinking supports 400K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Gpt 5.1 Thinking (gpt-5.1-thinking) is configured on: OpenAI. Upstream model IDs are listed in the fulfillment routes section.
Yes. Gpt 5.1 Thinking is routable at band C4. Send model: "gpt-5.1-thinking" or use an o10 smart routing alias.
Use o10 slug "gpt-5.1-thinking" or gateway ID "openai/gpt-5.1-thinking" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
o10 routes Gpt 5.1 Thinking only when per-use-case evals clear at your quality floor. Band C4 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.