Claude Opus 4.6

Feb 2026
Claude Opus 4.6
Compare in
on
—per task?
$5 / $25per 1M in / outcache $0.50
—output speed?
1Mcontext

Rankingin thinking mode?

Alternatives?

History

9 versions
8384858687Jan 26Apr 26Jul 26Release dateVals LegalBench4.54.64.74.85
8384858687Jan 26Apr 26Jul 26Release dateVals LegalBench4.54.64.74.85

Benchmarks

all categories
Chat & Knowledge
SimpleQA-Verifiedlab46.2
Chinese-SimpleQAlab76.2
GPQA Diamondlab91.3
MMLU-Pro EMlab89.1
MMLU-Pro · official boardlab89.1
HMMT February 2026lab96.2
IMOAnswerBenchlab75.3
Apexlab34.5
Apex Shortlistlab85.9
MRCR 1M MMRlab92.9
CorpusQA 1Mlab71.7
GDPval-AA Elolab1,619
Coding
SWE-bench Pro (edition unstated)lab57.3
Terminal Bench 2.0lab65.4
LiveCodeBenchlab88.8
SWE Verifiedlab80.8
SWE Multilinguallab77.5
Agents & Tool Use
Toolathlonlab47.2
BrowseComplab83.7
HLE without toolslab40
HLE with toolslab53.1
MCPAtlas Publiclab73.8

FAQ

How much does Claude Opus 4.6 cost?›

$5 per 1M input tokens and $25 per 1M output tokens; cached input $0.50 per 1M.

Is Claude Opus 4.6 free to use?›

There is no free API; the cheapest paid price is $5 per 1M input tokens.

How good is Claude Opus 4.6, and what is it best at?›

#47 of 336 in Chat & Knowledge, #31 of 44 in Coding, #5 of 16 in Agents & Tool Use, #4 of 197 in Writing & Language, #45 of 125 in Vision & Documents. Strongest at: Tool calling, Reasoning, Science, Long context, Knowledge.

Is Claude Opus 4.6 better than Claude Opus 4.5?›

On Vals LegalBench, Claude Opus 4.6 scores 85.3 vs 84.6 — about the same.

How can I use Claude Opus 4.6?›

Through the API of Amazon Bedrock, Anthropic, Azure, Claude Platform on AWS, Google.

What is the context window of Claude Opus 4.6?›

1M tokens, with up to 128K output tokens.

When was Claude Opus 4.6 released? Is there a newer version?›

Released 2026-02-04. It has been superseded by Claude Opus 4.7.

Is Claude Opus 4.6 open source?›

No, Claude Opus 4.6 is a closed model available through an API. The closest open-weights option here is Kimi K3.

Can Claude Opus 4.6 read images?›

It accepts text and images, PDF files as input.

What is Claude Opus 4.6?›

Claude Opus 4.6 is a closed language model from Anthropic, released Feb 2026, the successor to Claude Opus 4.5.

What are the best alternatives to Claude Opus 4.6?›

Gemini 4 Argon (cheaper), Claude Fable 5 (better), Kimi K3 (open weights).