Claude Opus Latest is Anthropic's language model with a 1.0M context window and up to 128K output tokens, starting at $4.00 / 1M input and $20.00 / 1M output. A routing alias that always resolves to the most capable model in Anthropic's Claude Opus family, suited for complex reasoning and nuanced tasks.
Specifications
Canonical IDanthropic-claude-opus
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Providers
Context Window1.0M tokens
Max Output128K tokens
Input ModalitiesImagePDFText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 6 months ago

Capabilities

Input3/5
Text✓
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities6/13
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
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OpenRouter
~anthropic/claude-opus-latest
$4.00$20.00$0.2$5.00$0.010

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Opus 5.51.0M$4.00$20.00Available
Claude Opus 5.51.0M$2.00$10.00Available
Claude Opus 51.0M$5.00$25.00Deprecating
Claude Opus 51.0M$2.50$12.50Available
Claude Opus 4.81.0M$5.00$25.00Available
Claude Opus 4.81.0M$2.50$12.50Available
Claude Opus 4.71.0M$5.00$25.00Deprecating
Claude Opus 4.71.0M$2.50$12.50Available
Claude Opus 4.61.0M$5.00$25.00Deprecated
Claude Opus 4.61.0M$2.50$12.50Available
Claude Opus Latest1.0M$4.00$20.00Current

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Haiku 5.5Haiku1.0M$0.100$0.500
Claude Haiku 5.5 BatchHaiku1.0M$0.050$0.250
Claude Sonnet 5.5Sonnet1.0M$2.00$10.00
Claude Sonnet 5.5 BatchSonnet1.0M$1.00$5.00
Claude Fable 5.1—1.0M$10.00$50.00
Claude Fable 5.1Fable1.0M$5.00$25.00
Claude Fable 5Fable1.0M$5.00$25.00
Claude Sonnet 5Sonnet1.0M$2.00$10.00
Claude Sonnet 5Sonnet1.0M$1.00$5.00
Claude Fable 5Fable1.0M$10.00$50.00

Model IDs

~anthropic/claude-opus-latest
anthropic-claude-opus
openrouter/~anthropic/claude-opus-latest