Gpt 5.1 Instant costs $1.25/1M input tokens and $10.00/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 128K tokens context window. o10 lists Gpt 5.1 Instant on OpenAI at routing band C4. API slug gpt-5.1-instant. 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 Instant 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 Instant is configured on OpenAI. Known host IDs: openai: openai/gpt-5.1-instant. This model is routable through o10 eval-gated routing.
Gpt 5.1 Instant supports a 128K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
Gateway snapshot pricing for Gpt 5.1 Instant.
| Unit | Price |
|---|---|
| Input | $1.25/1M tokens |
| Output | $10/1M tokens |
Upstream venues configured for Gpt 5.1 Instant.
| Host | Upstream model ID |
|---|---|
| openai | openai/gpt-5.1-instant |
Eval-gated model selection for this slug.
o10 slug: gpt-5.1-instant. Band: C4. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) and [/kyi](/kyi) for governance.
Gateway catalog snapshot 2026-06-27. Fulfillment catalog synced from o10 control plane. Verify list prices against openrouter and host providers.
Gpt 5.1 Instant 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 Instant supports 128K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Gpt 5.1 Instant (gpt-5.1-instant) is configured on: OpenAI. Upstream model IDs are listed in the fulfillment routes section.
Yes. Gpt 5.1 Instant is routable at band C4. Send model: "gpt-5.1-instant" or use an o10 smart routing alias.
Use o10 slug "gpt-5.1-instant" or gateway ID "openai/gpt-5.1-instant" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
o10 routes Gpt 5.1 Instant 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.