Claude Opus 5 Fast is Anthropic's language model with a 1.0M context window and up to 128K output tokens, available from 2 providers, starting at $10.00 / 1M input and $50.00 / 1M output. A high-throughput fast-mode variant of Claude Opus 5 delivering identical multimodal and agentic capabilities at increased output speed.
Specifications
Canonical IDanthropic-claude-5-opus-fast
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Providers
Context Window1.0M tokens
Max Output128K tokens
Input ModalitiesImagePDFText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 2 days ago

Capabilities

Input3/5
Text
Image
Audio·
Video·
PDF
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities4/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling·
Structured Outputs
Native JSON Schema
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Cache Write 5m
$ / 1M
Web Search
$ / request
OpenRouter logo
OpenRouter
anthropic/claude-opus-5-fast
$10.00$50.00$1.00$12.50$0.010
Vercel AI Gateway logo
Vercel AI Gateway
anthropic/claude-opus-5-fast
$10.00$50.00$1.00$12.50N/A

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Opus 5.3Available
Claude Opus 5 Fast1.0M$10.00$50.00Current
Claude Opus 51.0M$5.00$25.00Available
Claude Opus 5 Claude Opus 4.8$50.00Available
Claude Opus 4.81.0M$5.00$25.00Available
Claude Opus 4.8 Fast1.0M$10.00$50.00Available
Claude Opus 4.7 Fast1.0M$30.00$150.00Available
Claude Opus 4.71.0M$5.00$25.00Available
Claude Opus 4.61.0M$5.00$25.00Deprecated
Claude Opus 4.5410K$5.00$25.00Available
Claude Opus 4.1200K$15.00$75.00Deprecated

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Sonnet 5.3Sonnet
Claude Sonnet 5Sonnet1.0M$2.00$10.00
Claude Fable 5Fable1.0M$10.00$50.00
Claude Fable 5.3Fable
Claude Mythos 5Mythos1.0M$10.00$50.00
Claude Sonnet 4.6Sonnet1.0M$3.00$15.00
Claude Haiku 4.5Haiku200K$1.00$5.00
Claude Sonnet 4.5Sonnet1.0M$3.00$15.00
Claude Sonnet 4Sonnet1.0M$3.00$15.00
Claude Sonnet 4.6 AdaptiveSonnet

Model IDs

anthropic-claude-5-opus-fast
anthropic/claude-opus-5-fast