Claude Sonnet 5
Claude Sonnet 5Alternatives?
CheaperGPT-6.1 Solhigh×3.4-37%$0.32Remove unsupported parameters+5BetterGPT-5.6 Lunalow+51%-98%$0.01
OpenKimi K3max×2.3+293%$2.00Sampling parameters are fixed+3CheaperGPT-6 Solhigh×2.6-27%$0.37CheaperGPT-6 Lunamax×2.4-87%$0.068Function calling only with none · Chat Completions+3GPT-6.1 Solhigh×3.4-37%$0.32Remove unsupported parameters+5GPT-6 Solhigh×2.6-27%$0.37GPT-5.6 Lunamax×2.6-65%$0.18GPT-6 Lunamax×2.4-87%$0.068Function calling only with none · Chat Completions+3GPT-5.6 Sollow×2.2-49%$0.26GPT-5.6 Lunalow+51%-98%$0.01GPT-6 Lunamedium+47%-97%$0.017Function calling only with none · Chat Completions+3Claude Haiku 5.5medium+62%-91%$0.047Remove sampling parameters+5GPT-6.1 Sollow×2.9-74%$0.13Remove unsupported parameters+5GPT-6 Sollow×2.6-74%$0.13Kimi K3maxOpen×2.3+293%$2.00Sampling parameters are fixed+3
MiMo v2.6 ProthinkingOpen×2-74%$0.13Pass back reasoning_content+3
Muse Spark OpenxhighOpen+98%+66%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen+83%-48%$0.26Pass back reasoning_content · Chat Completions+4
Qwen3.8 27BxhighOpen+74%+98%$1.01Context: 1M → 262K+5Claude Fable 5.1low×3+366%$2.37Replace forced tool_choice+5Claude Opus 5.5low×2.7+8%$0.55No forced tool use+5Claude Fable 5max×2.6+1,619%$8.75Claude Opus 4.8max×2.4+702%$4.08Claude Opus 5low+83%+116%$1.10Claude Sonnet 5.5low+70%-32%$0.35No forced tool use+5Claude Sonnet 4.6max+68%+389%$2.49Claude Haiku 5.5low+19%-95%$0.024Remove sampling parameters+5All 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 $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?›
#115 of 334 in Chat & Knowledge, #48 of 132 in Coding, #61 of 133 in Agents & Tool Use, #40 of 195 in Writing & Language, #36 of 124 in Vision & Documents. Strongest at: Science.
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 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 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).