Claude Sonnet 4.6
Claude Sonnet 4.6Alternatives?
CheaperGemini 4 Argonhigh×4.3-33%*$1.99Synchronous output stops at 65,536+2
BetterGPT-6 Lunalow+52%-97%$0.005Function calling only with none · Chat Completions+3
OpenMiMo v2.6 Prothinking×3.7-91%$0.13Pass back reasoning_content+3CheaperClaude Sonnet 5.5max×4.1-33%$5.46No forced tool use+5CheaperGPT-6.1 Solmax×4-33%$0.72Remove unsupported parameters+5Gemini 4 Argonhigh×4.3-33%*$1.99Synchronous output stops at 65,536+2Claude Sonnet 5.5max×4.1-33%$5.46No forced tool use+5GPT-6.1 Solmax×4-33%$0.72Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen×3.7-91%$0.13Pass back reasoning_content+3
Muse Spark 1.3max×3.6-67%$1.60Only auto tool_choice is supported+5GPT-6 Lunalow+52%-97%$0.005Function calling only with none · Chat Completions+3GPT-5.6 Lunalow+49%-93%$0.01MiMo v2.5thinkingOpen×2-97%$0.019Claude Haiku 5.5low×2-97%$0.024Remove sampling parameters+5
Mercury 2high+28%-94%$0.039Context: 1M → 128K+1MiMo v2.6 ProthinkingOpen×3.7-91%$0.13Pass back reasoning_content+3
Kimi K3maxOpen×3.5same$2.00Sampling parameters are fixed+3
Step 5 PreviewthinkingOpen×3.5-76%$1.03web_search not available · Chat Completions+2Muse Spark OpenxhighOpen×3.3-67%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen×3.2-91%$0.26Pass back reasoning_content · Chat Completions+4Claude Fable 5max×4.2—$8.75Claude Opus 5.5medium×4.1—$1.34No forced tool use+5Claude Fable 5.1medium×4—$2.98Replace forced tool_choice+5Claude Opus 5medium×3.8—$2.19Claude Opus 4.8max×3.6—$4.08Claude Sonnet 5.5high×3.4—$0.88No forced tool use+5Claude Haiku 5.5medium×2.5—$0.047Remove sampling parameters+5Claude Opus 4.7high×2.5—$5 / $25All Anthropic models →History
7 versionsBenchmarks
in Chat & KnowledgeFAQ
How much does Claude Sonnet 4.6 cost?›
$3 per 1M input tokens and $15 per 1M output tokens; cached input $0.30 per 1M.
Is Claude Sonnet 4.6 free to use?›
There is no free API; the cheapest paid price is $3 per 1M input tokens.
How good is Claude Sonnet 4.6, and what is it best at?›
#152 of 334 in Chat & Knowledge, #46 of 132 in Coding, #61 of 133 in Agents & Tool Use, #27 of 195 in Writing & Language, #67 of 124 in Vision & Documents. Strongest at: Knowledge.
Is Claude Sonnet 4.6 better than KAT-Coder-Pro V1?›
On Humanity's Last Exam, Claude Sonnet 4.6 scores 33.6 vs 33.6 — about the same.
How can I use Claude Sonnet 4.6?›
Through the API of Amazon Bedrock, Anthropic, Azure, Claude Platform on AWS, DeepInfra and 1 more.
What is the context window of Claude Sonnet 4.6?›
1M tokens, with up to 128K output tokens.
When was Claude Sonnet 4.6 released? Is there a newer version?›
Released 2026-02-17. It has been superseded by Claude Sonnet 5.
Is Claude Sonnet 4.6 open source?›
No, Claude Sonnet 4.6 is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.
Can Claude Sonnet 4.6 read images?›
It accepts text and images, PDF files as input.
What is Claude Sonnet 4.6?›
Claude Sonnet 4.6 is a closed language model from Anthropic, released Feb 2026.
What are the best alternatives to Claude Sonnet 4.6?›
Gemini 4 Argon (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).