Claude Opus 4.8

May 2026
Claude Opus 4.8
Compare in
on
—per task?
$5 / $25per 1M in / outcache $0.50
—output speed?
1Mcontext

Rankingat high effort?

Alternatives?

History

9 versions
2030405060Jul 25Jan 26Jul 26Release dateAA Intelligence Index 4.3.244.14.54.64.74.855.5
2030405060Jul 25Jan 26Jul 26Release dateAA Intelligence Index 4.3.244.14.54.64.74.855.5

Benchmarks

all categories
Chat & Knowledge
HealthBench Professional length-adjustedlab56.9
Coding
WebDev Arena1,556#33
DeepSWE 150.7#4
SWE-bench Pro (edition unstated)lab69.2
DeepSWE (edition unstated)lab58
Terminal-Bench 2.1lab82.7
Meta Internal Coding Benchlab69
Agents & Tool Use
OSWorld-Verifiedlab83.4
Toolathlon-Verifiedlab76.2
MCP Atlaslab82.2
JobBenchlab48.4
Humanity’s Last Exam with toolslab57.9
Finance Agent v2lab53.9
DeepSearchQAlab84.3
Writing & Language
Vision & Documents
CharXiv Reasoninglab89.9
BabyVisionlab81.2

FAQ

How much does Claude Opus 4.8 cost?›

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

Is Claude Opus 4.8 free to use?›

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

How good is Claude Opus 4.8, and what is it best at?›

#14 of 334 in Chat & Knowledge, #28 of 132 in Coding, #41 of 133 in Agents & Tool Use, #12 of 195 in Writing & Language, #28 of 37 in Vision & Documents. Strongest at: Coding, Agents & work tasks, Tool calling, Reasoning, Science, Knowledge.

Is Claude Opus 4.8 better than Claude Opus 4.1?›

On AA Intelligence Index 4.3.2, Claude Opus 4.8 scores 41.8 vs 22.8 — higher.

How can I use Claude Opus 4.8?›

Through the API of Amazon Bedrock, Anthropic, Azure, Claude Platform on AWS, DeepInfra and 1 more.

What is the context window of Claude Opus 4.8?›

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

When was Claude Opus 4.8 released? Is there a newer version?›

Released 2026-05-28. It has been superseded by Claude Opus 5.

Is Claude Opus 4.8 open source?›

No, Claude Opus 4.8 is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can Claude Opus 4.8 read images?›

It accepts text and images, PDF files as input.

What is Claude Opus 4.8?›

Claude Opus 4.8 is a closed language model from Anthropic, released May 2026, the successor to Claude Opus 4.1.

What are the best alternatives to Claude Opus 4.8?›

Claude Opus 5.5 (cheaper), MiMo v2.6 Pro (better).