losclouds
Model · OpenAI

GPT-5.1

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5.

Pricing

Model Overview

Tracked token-pricing fields for this model family. Empty pricing fields stay hidden until the source publishes them.

Model pricing
Price fieldValue
Input$1.25 / 1M tokens
Output$10.00 / 1M tokens
Cached read$0.13 / 1M tokens
SourceOpenRouter
VerifiedApr 5, 2026 (High)

Surface

Capabilities

Input and output modalities, enabled feature flags, strengths, and tradeoffs.

Model capabilities
AttributeValues
Modalities
imagetextfile
to
text
Capabilities
reasoningimageInputpromptCachingfunctionCallingstructuredOutputs

References

Official Links

Canonical launch, documentation, pricing, and release-note URLs.

Official model links
ReferenceURL
Introhttps://openrouter.ai/openai/gpt-5.1
Docshttps://openrouter.ai/openai/gpt-5.1
Pricinghttps://openrouter.ai/models

Coverage

Benchmark Coverage

Reported benchmark families, versions, scores, sources, and notes.

Benchmark coverage
BenchmarkVersionScoreDateSourceNotes

Lifecycle

Release History

Lifecycle transitions and release timeline for this model family.

Release history
ReleaseAliasLifecycleRelease DateDeprecationShutdownSummary
GPT-5.1openai-gpt-5-1ActiveNov 13, 2025——Model available via OpenRouter.

Surfaces

Host Coverage

Provider-specific hosting, context, pricing notes, feature differences, and provider-status context.

Host coverage
HostTypeContextPricing NoteDifferences
OpenRouteraggregator400.0K$1.25/1M in · $10.00/1M out via OpenRouter—

Migration

Migration Guidance

Documented migration summary, successor families, and known breaking changes.

Migration guidance
TopicDetails
Summary

Timeline

Change Events

Cataloged model-family updates and source references.

Change events
DateTypeTitleDescriptionSource
Nov 13, 2025family_addedGPT-5.1 publishedModel made available via OpenRouter.OpenRouter

From OpenAI

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