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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 record Report
InputT
OutputT
Input price$15/M
Output price$75/M
Context200K
Max output32K
Providers13
Inference availability

Providers

Provider-specific identifiers, limits, and listed prices per million tokens. Every row links back to the provider's own documentation.

Report a price
Providers offering Claude Opus 4.1
ProviderProvider model IDContextMax outputInputOutputCache readCapabilitiesDocs
Vertex claude-opus-4-1@20250805 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
DigitalOcean anthropic-claude-4.1-opus 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
FastRouter anthropic/claude-opus-4.1 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
DevPass (LLM Gateway) claude-opus-4-1-20250805 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
Abacus claude-opus-4-1-20250805 200K 32K $15 $75 ReasoningTools Docs ↗
Azure Cognitive Services claude-opus-4-1 200K 32K $15 $75 $1.5 ReasoningToolsJSON Docs ↗
Azure claude-opus-4-1 200K 32K $15 $75 $1.5 ReasoningToolsJSON Docs ↗
Vertex (Anthropic) claude-opus-4-1@20250805 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
Amazon Bedrock anthropic.claude-opus-4-1-20250805-v1:0 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗
Merge Gateway anthropic/claude-opus-4-1-20250805 200K 32K $15 $75 $1.5 ReasoningToolsJSON Docs ↗
Vercel AI Gateway anthropic/claude-opus-4.1 200K 32K $15 $75 $1.5 ReasoningToolsJSON Docs ↗
Anthropic claude-opus-4-1-20250805 200K 32K $15 $75 $1.5 ReasoningToolsJSON Docs ↗
OpenCode Zen claude-opus-4-1 200K 32K $15 $75 $1.5 ReasoningTools Docs ↗

Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.

Listed rates

Price across providers

Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.

Lowest input $15/M

Across 13 priced providers

Median input $15/M

Midpoint of listed rates

Highest input $15/M

Same as the lowest listed rate

Output range $75 – $75

Per million output tokens

Vertex $15/M
DigitalOcean $15/M
FastRouter $15/M
DevPass (LLM Gateway) $15/M
Abacus $15/M
Azure Cognitive Services $15/M
Azure $15/M
Vertex (Anthropic) $15/M
Amazon Bedrock $15/M
Merge Gateway $15/M
Vercel AI Gateway $15/M
Anthropic $15/M
OpenCode Zen $15/M
Cost calculator

Estimate a workload

$0.00
Excludes taxes, non-token charges, and tiered discounts.

13 providers list the identical $15 input rate, so price alone will not separate them — compare context limits, max output, and capabilities above.

Specification

Capabilities

Recorded from the source catalog and provider listings.

Reasoning Yes
Tool calling Yes
Structured output Yes
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
Published evaluations

Benchmarks

Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.

Benchmark registry
No published benchmark results

ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.

Read the methodology
Catalog activity

Change log

Field-level changes detected between successful source imports.

Full change log
No changes recorded

This record has not changed within the retained import history.

Provenance

Sources & verification

Every figure on this page traces back to one of these records.

Methodology
Public API

Use this record

Fetch the complete source-linked model record. No key, no account, no rate-limited tier.

API documentation
Endpoint
GET https://model.kyssta.lol/api/v1/models/anthropic/claude-opus-4-1-20250805
curl
curl "https://model.kyssta.lol/api/v1/models/anthropic/claude-opus-4-1-20250805"
Common questions

Frequently asked questions

Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.

What is Claude Opus 4.1?

Flagship Claude model for deep reasoning, coding, and long-horizon agents. It is published by Anthropic and catalogued here from Models.dev.

How much does Claude Opus 4.1 cost?

Listed input pricing starts at $15 per million tokens from Vertex.

What is the context length of Claude Opus 4.1?

Claude Opus 4.1 accepts up to 200K tokens of context and returns up to 32K output tokens.

Does Claude Opus 4.1 support tool calling and structured output?

Provider catalogs list support for tool calling, structured output, reasoning, and image input.

Which providers serve Claude Opus 4.1?

13 providers list this model: Vertex, DigitalOcean, FastRouter, DevPass (LLM Gateway), Abacus, Azure Cognitive Services and 7 more.

Are the weights for Claude Opus 4.1 open?

No. This model is served through hosted APIs only.

When was Claude Opus 4.1 released?

The catalog records a release date of 2025-08-05, last verified Sep 11, 2026.

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