What is Claude Sonnet 5.5?
Faster, cheaper Claude 5.5 model with a 1M-token context, at $2 and $10 per million tokens.
How much does Claude Sonnet 5.5 cost?
Claude Sonnet 5.5 costs $2 per million input tokens and $10 per million output tokens on the API, and Sonnet comes with Claude's Free plan, with Pro at $20 a month and Max at $100 a month for more usage.
- Sonnet and Haiku in chat on web, desktop and mobile
- Web search, file creation and code runs
- Limits reset every 5 hours and every week
- Cache reads $0.10 and 5-minute cache writes $2.50
- Batch API halves it to $1 / $5
- Full 1M-token context at the same rate
- $17 a month billed yearly ($200 up front)
- More usage than Free, plus Opus models
- Claude Code included
- 5x Pro usage every 5 hours and every week
- $100 a month in Claude Platform API credits
- Priority access at busy times
Ultra is $200 a month for 10x Pro's weekly usage, with no 5-hour limit for verified accounts and $200 a month in API credits. Team seats cost $25 a month (Standard) or $125 (Premium), or $20 and $100 billed yearly, and Enterprise is $20 per seat a month billed yearly plus usage at API rates. On the API, 1-hour cache writes cost $4 per million tokens and US-only inference costs 1.1 times the standard rate. Sonnet 5.5 also runs on Amazon Bedrock, Google Cloud and Microsoft Foundry. Prices are in US dollars. Full pricing on claude.com. We checked these prices on .
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What are the best Claude Sonnet 5.5 alternatives?
Three tools on Recaply do Claude Sonnet 5.5's job.
Questions about Claude Sonnet 5.5
What is Claude Sonnet 5.5?
Faster, cheaper Claude 5.5 model with a 1M-token context, at $2 and $10 per million tokens.
Is Claude Sonnet 5.5 free?
Yes. Claude Sonnet 5.5 has a free plan: sonnet and Haiku in chat on web, desktop and mobile.
How much does Claude Sonnet 5.5 cost?
Claude Sonnet 5.5's paid plans are API at $2 / $10 per million input / output tokens, Pro at $20 per month and Max at $100 per month.
What are the best Claude Sonnet 5.5 alternatives?
The closest alternatives on Recaply are Claude Opus 5.5, GPT-6 Sol and Gemini 3.8 Flash.
Where can I try Claude Sonnet 5.5?
On its official website, anthropic.com.
Should I use Claude Sonnet 5.5 or Opus 5.5?
Claude Sonnet 5.5 costs half as much per token ($2 / $10 against $4 / $20), runs faster and comes with the Free plan. Anthropic still calls Opus 5.5 clearly stronger at complex, open-ended work that needs sustained judgment, and suggests starting with Opus for most API workloads.
What changed from Claude Sonnet 5?
Claude Sonnet 5.5 keeps Sonnet 5's $2 / $10 token price but halves cache reads to $0.10, writes output over 30% faster and, in Anthropic's tests, needs fewer tokens per task, up to 30% less cost. It is also the first Sonnet with cyber safeguards that fall back to Sonnet 5 on flagged requests.
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