Claude Sonnet 5

Anthropic's most agentic Sonnet, released June 30, 2026 — generally available now as the default model on Free and Pro plans, plus Max/Team/Enterprise and the API (claude-sonnet-5). Delivers near-Opus-4.8 quality at much lower cost, with strong agentic planning, autonomous tool/browser/terminal use and coding. Introductory pricing $2 input / $10 output per 1M tokens through Aug 31, 2026, then $3 / $15 standard. Context window not yet published — verify.

Claude Sonnet 5 strengths

• Highly agentic (planning + autonomous tool/browser/terminal use)
• Strong agentic coding
• Near-Opus-4.8 quality at much lower cost
• Great for high-scale agents and chatbots
• Improved safety over predecessors

Pricing & context

Cost guide: a typical call of about 10K input + 2K output tokens costs roughly $0.040 at list prices. Worth modelling against cheaper tiers before committing high-volume traffic.

When to choose Claude Sonnet 5

Claude Sonnet 5 is best for running AI agents affordably, multi-step automation, coding assistants and high-scale chat where you want near-flagship quality at lower cost. If your workload is more cost-sensitive, weigh it against gpt-oss-120b (≈$0.03 input /1M) first.

Claude Sonnet 5 FAQ

How much does Claude Sonnet 5 cost?

Claude Sonnet 5 is priced at $2.00 per 1M input tokens and $10.00 per 1M output tokens (public API list price), with a 1M tokens context window. A typical call of about 10K input and 2K output tokens costs roughly $0.040.

What is Claude Sonnet 5 best for?

Claude Sonnet 5 by Anthropic is best for running AI agents affordably, multi-step automation, coding assistants and high-scale chat where you want near-flagship quality at lower cost.

How does Claude Sonnet 5 pricing compare to Kimi K3?

Claude Sonnet 5 input costs $2.00 per 1M tokens versus $3.00 for Kimi K3, roughly 1.5x less expensive on input. Output is $10.00 vs $15.00.

Is Claude Sonnet 5 multimodal?

Claude Sonnet 5 supports text, image.