Claude 3.5 Sonnet
LegacyClaude 3.5 Sonnet — better-than-Opus capabilities at Sonnet speeds.
Exceptional at coding (49% SWE-Bench Verified) and long-context analysis. Superseded by Claude Sonnet 4.x family.
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Claude 3.5 Sonnet by Anthropic has a Capability Index of 67.5, making it comparable to the field average. It ranks #59 out of 92 models on the idapt capability leaderboard.
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Mistral Small 4vs Claude 3.5 SonnetFrequently Asked Questions about Claude 3.5 Sonnet▼
Who created Claude 3.5 Sonnet?
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Claude 3.5 Sonnet was created by Anthropic.
How capable is Claude 3.5 Sonnet?
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Claude 3.5 Sonnet has a Capability Index of 67.5/100, making it comparable to the field average. It ranks #59 out of 92 models.
Is Claude 3.5 Sonnet a reasoning model?
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No, Claude 3.5 Sonnet is not a reasoning model. It responds directly without an extended internal thinking step. For tasks requiring deep chain-of-thought reasoning, consider models like Claude, o-series from OpenAI, or Gemini Thinking.
Does Claude 3.5 Sonnet support image or vision input?
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No, Claude 3.5 Sonnet does not currently support image or vision input. It is a text-only model.
Does Claude 3.5 Sonnet support audio?
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No, Claude 3.5 Sonnet does not support audio input.
Is Claude 3.5 Sonnet open source?
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Claude 3.5 Sonnet is a proprietary model developed by Anthropic. The model weights and training data are not publicly available.
Where can I use Claude 3.5 Sonnet?
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You can chat with Claude 3.5 Sonnet on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access Claude 3.5 Sonnet through Anthropic's own API or platform.