Claude Sonnet 5
Claude Sonnet 5Alternatives?
CheaperGPT-6.1 Solhigh×3.4-82%$0.32Remove unsupported parameters+5BetterGPT-5.6 Lunalow+51%-99%$0.01
OpenKimi K3max×2.3+12%$2.00Sampling parameters are fixed+3Lower effortSame modelmedium+23%-44%$1.00CheaperGPT-6 Astralow×3.2-54%$0.82Monitoring can return HTTP 403+2GPT-6.1 Solhigh×3.4-82%$0.32Remove unsupported parameters+5GPT-6 Astralow×3.2-54%$0.82Monitoring can return HTTP 403+2GPT-5.6 Solhigh×3-55%$0.81
Muse Spark 1.3max×2.8-10%$1.60Only auto tool_choice is supported+5Claude Opus 5.5low×2.7-69%$0.55No forced tool use+5GPT-5.6 Lunalow+51%-99%$0.01GPT-6 Lunamedium+47%-99%$0.017Function calling only with none · Chat Completions+3Claude Haiku 5.5medium+62%-97%$0.047Remove sampling parameters+5GPT-6.1 Sollow×2.9-93%$0.13Remove unsupported parameters+5GPT-6 Sollow×2.6-93%$0.13Kimi K3maxOpen×2.3+12%$2.00Sampling parameters are fixed+3
MiMo v2.6 ProthinkingOpen×2-93%$0.13Pass back reasoning_content+3Muse Spark OpenxhighOpen+98%-53%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen+83%-85%$0.26Pass back reasoning_content · Chat Completions+4
Qwen3.8 27BxhighOpen+74%-44%$1.01Context: 1M → 262K+5Claude Opus 5.5high×3.1same$1.82No forced tool use+5Claude Fable 5.1high×2.9+118%$3.91Replace forced tool_choice+5Claude Sonnet 5.5high×2.7-51%$0.88No forced tool use+5Claude Fable 5max×2.6+388%$8.75Claude Opus 4.8max×2.4+128%$4.08Claude Opus 5high×2.1+102%$3.61Claude Haiku 5.5high+83%-96%$0.079Remove sampling parameters+5Claude Sonnet 4.6max+68%+39%$2.49All Anthropic models →History
7 versionsBenchmarks
in Chat & KnowledgeFAQ
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 $1.79 at high 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?›
#58 of 334 in Chat & Knowledge, #44 of 132 in Coding, #48 of 133 in Agents & Tool Use, #40 of 195 in Writing & Language, #36 of 124 in Vision & Documents. Strongest at: Reasoning, Science, Knowledge.
Is Claude Sonnet 5 better than Claude Sonnet 4.6?›
On GDP.pdf · AA all-pass, Claude Sonnet 5 scores 13.2 vs 15.8 — lower. It is 28% 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 Kimi K3.
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?›
GPT-6.1 Sol (cheaper), GPT-5.6 Luna (better), Kimi K3 (open weights).