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Models/Anthropic

Claude Opus 4.1

Flagship Claude model for deep reasoning, coding, and long-horizon agents

Source-linked claude-opus Closed weights Released 2025-08-05
API data Report
Input modalitiesT
Output modalitiesT
Input price$15/1M tokens
Output price$75/1M tokens
Context window200K
Max output32K
Overview

Capabilities and specifications

✓ Reasoning Yes
✓ Tool calling Yes
? Structured output Unknown
✓ Attachments Yes
✓ Vision input Yes
× Open weights No
Creator
Anthropic
Model family
claude-opus
Knowledge cutoff
2025-03-31
License
Not documented
Release date
2025-08-05
Model ID
anthropic/claude-opus-4-1-20250805
Inference availability

Provider pricing and availability

Provider-specific identifiers, limits, and prices per million tokens.

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Providers offering Claude Opus 4.1
ProviderProvider model IDContextInputOutputCache readCapabilitiesSource
Vercel AI Gateway anthropic/claude-opus-4.1 200K $15 $75 $1.5 ReasoningToolsJSON Docs
DigitalOcean anthropic-claude-4.1-opus 200K $15 $75 $1.5 ReasoningTools Docs
Merge Gateway anthropic/claude-opus-4-1-20250805 200K $15 $75 $1.5 ReasoningToolsJSON Docs
LLM Gateway claude-opus-4-1-20250805 200K $15 $75 $1.5 ReasoningTools Docs
Abacus claude-opus-4-1-20250805 200K $15 $75 - ReasoningTools Docs
Vertex (Anthropic) claude-opus-4-1@20250805 200K $15 $75 $1.5 ReasoningTools Docs
Azure claude-opus-4-1 200K $15 $75 $1.5 ReasoningToolsJSON Docs
Anthropic claude-opus-4-1-20250805 200K $15 $75 $1.5 ReasoningToolsJSON Docs
OpenCode Zen claude-opus-4-1 200K $15 $75 $1.5 ReasoningTools Docs
Amazon Bedrock anthropic.claude-opus-4-1-20250805-v1:0 200K $15 $75 $1.5 ReasoningTools Docs
FastRouter anthropic/claude-opus-4.1 200K $15 $75 $1.5 ReasoningTools Docs
Azure Cognitive Services claude-opus-4-1 200K $15 $75 $1.5 ReasoningToolsJSON Docs
Vertex claude-opus-4-1@20250805 200K $15 $75 $1.5 ReasoningTools Docs

Capability badges appear only when the provider catalog explicitly lists support.

Serving quality

Performance and reliability

Observed serving measurements stay separate from model specifications and are never estimated from price or model size.

Throughput Not reported

Generation speed; higher is faster.

Latency / TTFT Not reported

Time until the first output token arrives.

Uptime Not reported

Successful requests over a measured period.

Performance varies by inference provider, region, and load. Provider-level measurements appear only when a source reports them.

Published evaluations

Benchmarks

Raw results remain attached to their original source and version.

Benchmark registry
No comparable benchmark results

ModelBench does not infer quality from price, context size, or model name.

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Catalog activity

Recent record changes

Detected changes from successful source imports.

Full change log
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Public API

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API documentation
Endpoint
GET https://www.modelbench.lol/api/v1/models/anthropic/claude-opus-4-1-20250805
curl
curl "https://www.modelbench.lol/api/v1/models/anthropic/claude-opus-4-1-20250805"