Models/Anthropic/Claude Opus 4.1

Claude Opus 4.1

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...

01

Identity

200,000Context in
32,000Context out
2025-08-05 (OpenRouter created 1754411591)Released
ProprietaryWeights
Canonical name
Claude Opus 4.1
Aliases
anthropic/claude-opus-4.1
Continuum hosted id
Not listed as a Continuum hosted id
OpenRouter slug
anthropic/claude-opus-4.1
Hugging Face
None (closed or unpublished)
Modalities
image, text, file
Closed weights Not on Continuum host list Closed

Context window on the 2026-08-19 OpenRouter row: 200,000 tokens.

Max completion tokens on that row: 32,000.

Input / output on that row: $15.00 / $75.00 per 1M tokens.

Architecture fields: text+image+file->text · Claude.

No hugging_face_id on the 2026-08-19 OpenRouter row.

02

Should I use this for coding agents

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks.

When you want the 2025-08-05 catalog SKU, not a later rename.

No independent row for this SKU

No independent board lists this exact SKU as of 2026-08-19.

Closest benchmarked sibling: Claude Opus 5, 74% ±4% Pass@1 at max on the DeepSWE official board. That is a score for the sibling, not for this SKU.

Boards checked: DeepSWE official (2026-08-13), Artificial Analysis Intelligence Index, vals.ai hero index. Every card that does carry a row is on the coding leaderboard.

DeepSWE

No official DeepSWE mini-swe-agent row for this identity on the public board we fetched.

omitted, not invented as of 2026-08-13 source
Artificial Analysis

No Intelligence Index integer fetched for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source
Vals Index

We did not open a vals.ai card for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source
03

When not to use it

Trust this before you buy

  • When you need a Continuum-hosted SKU from this lab, use the hosted card on this hub instead of this catalog row.
  • $15.00 in / $75.00 out per 1M on the 2026-08-19 OpenRouter row. Context 200,000 in / 32,000 out.
  • Need a denser published sibling on this hub? Claude Opus 5 is the card already on the cluster.
  • When the job needs a published DeepSWE, Artificial Analysis, or vals.ai chip: this page does not invent one. Those boards did not list this exact SKU on 2026-08-19.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.

04

Artifact

Weights

Closed API SKU. The 2026-08-19 OpenRouter row lists pricing and context; there is no official Hugging Face weight dump on that row.

What you can open

Lab card and OpenRouter listing only. No Hugging Face Files button, because there is no official repo to point at.

Fetched OpenRouter catalog on 2026-08-19. hugging_face_id was empty.

05

Continuum serving

OpenRouter slug anthropic/claude-opus-4.1 on the 2026-08-19 catalog.

First party: https://docs.anthropic.com/en/docs/about-claude/models.

Not on the Continuum host list fetched 2026-08-19.

Continuum hosted id not on the host list

We list first-party and OpenRouter, plus Continuum only when the live public allowlist named the id. This is not a 15-host routing table.

06

Economics

OpenRouter 2026-08-19: $15.00 in / $75.00 out per 1M tokens. Context 200,000 in / 32,000 out.

No separate internal-reasoning price on that row.

Price this model Opens the pricing calculator preloaded with Claude Opus 4.1.

On a Claude plan? The plan picker models the weekly caps.

07

Provenance

ClaimSourceAs of
OpenRouter id anthropic/claude-opus-4.1; context 200000; created 1754411591; $15.00 / $75.00 per 1MOpenRouter /api/v1/models2026-08-19
OpenRouter id anthropic/claude-opus-4.1, context 200,000OpenRouter /api/v1/models2026-08-19
08

Compare, FAQ, and Get Plus

No other card in this cluster shares a published DeepSWE official row we can put next to this one. We will not compare on vendor-blog numbers.

Continue through Anthropic's model family with Claude Fable 5.

FAQ

Why does the lab blog disagree with DeepSWE or Scale?

Lab posts pick a harness, an effort, a split, and sometimes a private eval set. DeepSWE publishes the official mini-swe-agent row with cost, tokens, and steps. Scale SWE-bench Pro only counts when the public shared-harness board has a row we can fetch. A higher lab number is usually a different test, not a better one.

OpenAI-compatible call

No Continuum hosted id is verified for this model, so this page does not invent a curl target. Use the first-party API or the OpenRouter slug anthropic/claude-opus-4.1.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.