Claude Sonnet 5
LegacyPremiumAnthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.
A large jump over Sonnet 4.6 across coding, agents, and professional work, approaching Opus 4.8 quality while staying fast and affordable. Excels at iterative development, complex codebase navigation, end-to-end workspace management with memory, and confident computer use for web QA and workflow automation. Supports text, image, and file inputs with tool use and structured outputs. Superseded by Claude Sonnet 5.5.
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Claude Sonnet 5 by Anthropic has a Capability Index of 80.1, making it comparable to the field average. It ranks #26 out of 92 models on the idapt capability leaderboard. Claude Sonnet 5 is very affordable at $2.00/M tokens input and $10.00/M tokens output. Cached input reads are priced at $0.20/M tokens, making repeated context cheaper. The model supports vision/image input, extended reasoning, a 1M context window.
Direct upgrade at the same price: stronger features-and-bugs work and clearer writing.
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Nemotron 3 Ultravs Claude Sonnet 5Frequently Asked Questions about Claude Sonnet 5▼
When was Claude Sonnet 5 released?
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Claude Sonnet 5 was released on June 30, 2026.
Who created Claude Sonnet 5?
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Claude Sonnet 5 was created by Anthropic.
How capable is Claude Sonnet 5?
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Claude Sonnet 5 has a Capability Index of 80.1/100, making it comparable to the field average. It ranks #26 out of 92 models.
How much does Claude Sonnet 5 cost?
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Claude Sonnet 5 costs $2.00/M input tokens and $10.00/M output tokens.
What is Claude Sonnet 5 API pricing?
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The Claude Sonnet 5 API is priced at $2.00 per million input tokens and $10.00 per million output tokens. You can access Claude Sonnet 5 through idapt.app alongside 200+ other AI models in one workspace.
Is Claude Sonnet 5 a reasoning model?
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Yes, Claude Sonnet 5 is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does Claude Sonnet 5 support image or vision input?
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Yes, Claude Sonnet 5 supports vision/image input. You can share images in your conversation and the model will analyze and respond based on their content.
Does Claude Sonnet 5 support audio?
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No, Claude Sonnet 5 does not support audio input.
What is the context window of Claude Sonnet 5?
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Claude Sonnet 5 has a context window of 1M tokens, meaning it can process approximately 750,000 words of context at once.
Is Claude Sonnet 5 open source?
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Claude Sonnet 5 is a proprietary model developed by Anthropic. The model weights and training data are not publicly available.
What is Claude Sonnet 5 good at?
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Based on benchmark data, Claude Sonnet 5 excels at: mathematical problem solving, visual analysis and image understanding. It is Anthropic's capable model suitable for a wide range of tasks.
Where can I use Claude Sonnet 5?
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You can chat with Claude Sonnet 5 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 Sonnet 5 through Anthropic's own API or platform.