Claude Sonnet 5

Jun 2026
Claude Sonnet 5
Compare in
on
$0.51per task?
$2 / $10per 1M in / outcache $0.20
66 tok/sfirst token in 1.8 s?
1Mcontext

Rankingat low effort?

Full ranking →
1Sonnet 5.51,811.82Opus 5.51,799.73Muse Wonder Full1,729.34Fable 5.11,669.45Muse Wonder1,658.7
···
63Nex N2 Pro939.664Sonnet 5926.365Qwen3.7 Max916.2

Strong at

S
Science#27 of 312
B
Coding#50 of 134Agents & work tasks#64 of 177Reasoning#117 of 336Long context#137 of 314Knowledge#89 of 320Vision#37 of 125

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperClaude Haiku 5.5maxwins 98%-58%$0.21Remove sampling parameters+5BetterGPT-6 Lunamediumwins 73%-97%$0.017Function calling only with none · Chat Completions+3OpenQwen3.8 Flashthinkingwins 98%-27%$0.37Context: 1M → 262K+6CheaperDeepSeek V4.1 Flash 1017maxOpenwins 98%-48%$0.26Pass back reasoning_content · Chat Completions+4CheaperMiMo v2.6 ProthinkingOpenwins 97%-74%$0.13Pass back reasoning_content+3

History

7 versions
1,0001,5002,000Oct 25Jan 26Apr 26Jul 26Oct 26Release dateAA-Briefcase 1.14.54.655.5
1,0001,5002,000Jan 26Jul 26Release dateAA-Briefcase 1.14.54.655.5

Benchmarks

in Agents & Tool Use
Terminal-Bench 4.02.5#50
GDPval-AA (work tasks) 2.11,067.4#64
AA-LCR (long context) 1.167.3#137
AutomationBench-AA19.9#63
AA-Briefcase 1.1 · Elo926.3#64
DeepSWE 1.130.5#32
SWE-bench Pro (public)lab63.2

FAQ

How much does Claude Sonnet 5 cost?›

$2 per 1M input tokens and $10 per 1M output tokens; cached input $0.20 per 1M. A typical benchmark task costs about $0.51 at low effort.

Is Claude Sonnet 5 free to use?›

There is no free API; the cheapest paid price is $2 per 1M input tokens.

How good is Claude Sonnet 5, and what is it best at?›

#117 of 336 in Chat & Knowledge, #50 of 134 in Coding, #63 of 135 in Agents & Tool Use, #49 of 197 in Writing & Language, #37 of 125 in Vision & Documents. Strongest at: Science.

Is Claude Sonnet 5 better than Claude Sonnet 4.6?›

On AA-Briefcase 1.1 · Elo, Claude Sonnet 5 scores 1,356.6 vs 1,061.9 — higher. It is 80% cheaper per task.

How can I use Claude Sonnet 5?›

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

What is the context window of Claude Sonnet 5?›

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

When was Claude Sonnet 5 released? Is there a newer version?›

Released 2026-06-29. It has been superseded by Claude Sonnet 5.5.

Is Claude Sonnet 5 open source?›

No, Claude Sonnet 5 is a closed model available through an API. The closest open-weights option here is Qwen3.8 Flash.

Can Claude Sonnet 5 read images?›

It accepts text and images, PDF files as input.

What is Claude Sonnet 5?›

Claude Sonnet 5 is a closed language model from Anthropic, released Jun 2026, the successor to Claude Sonnet 4.6.

What are the best alternatives to Claude Sonnet 5?›

Claude Haiku 5.5 (cheaper), GPT-6 Luna (better), Qwen3.8 Flash (open weights).