NeuroGenesysClaude Sonnet 5.5 API pricing
Last updated • By Will Schulz
Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens on Anthropic's standard API tier, as of Nov 09, 2026. Cached input is $0.20 per 1M. 1,000 chatbot replies (2K tokens in, 500 out each) cost about $9.00.
How much does Claude Sonnet 5.5 cost per token?
| Rate | Input | Output | Cached input |
|---|---|---|---|
| Standard | $2.00 | $10.00 | $0.20 |
Standard-tier list prices from Anthropic's pricing page, last checked Nov 09, 2026. Batch processing and committed-use discounts can be lower; cache-write surcharges and taxes are not included.
What do common jobs cost on Claude Sonnet 5.5?
| Workload | Cost | |
|---|---|---|
| 1,000 chatbot replies2K tokens in, 500 out each | $9.00 | calculator |
| Summarize 1M tokens of documents100 documents of 10K tokens, a 500-token summary each | $2.50 | calculator |
| 1,000 RAG queries20K tokens in (half from the prompt cache), 800 out each | $30.00 | calculator |
| 100 coding-agent steps150K tokens in (90% cached), 4K out each | $9.70 | calculator |
| 1M classification calls800 tokens in, 10 out each | $1,700 | calculator |
Computed with the LLM API cost calculator's pricing rules: cached tokens at the cache-read rate where one is listed, and the long-context rate for the whole request once a prompt passes the threshold. Tokenizers differ, so the same text is a different number of tokens on each provider.
How does Claude Sonnet 5.5 compare with similar-priced models?
| Model | Input / 1M | Output / 1M | 1,000 chatbot replies | vs Claude Sonnet 5.5 |
|---|---|---|---|---|
| Claude Haiku 4.5Anthropic | $1.00 | $5.00 | $4.50 | 0.50× |
| Gemini 3.8 FlashGoogle | $1.50 | $7.50 | $6.75 | 0.75× |
| Claude Sonnet 5.5 | $2.00 | $10.00 | $9.00 | — |
| GPT-6.1 SolOpenAI | $2.00 | $10.00 | $9.00 | 1.00× |
| Gemini 3.1 Pro (preview)Google | $2.00 | $12.00 | $10.00 | 1.11× |
| Claude Opus 5.5Anthropic | $4.00 | $20.00 | $18.00 | 2.00× |
Closeness and order use the list-price cost of 1,000 chatbot replies (2K tokens in, 500 out each). Compare every model on your workload.
Questions
How much does Claude Sonnet 5.5 cost per 1M tokens?
$2.00 per 1M input tokens and $10.00 per 1M output tokens at Anthropic's standard list price, as of Nov 09, 2026. Output tokens include any reasoning tokens the model generates.
How much do 1,000 chatbot replies cost with Claude Sonnet 5.5?
About $9.00 at the list price, for 1,000 replies of 2,000 input and 500 output tokens each. Longer prompts, prompt caching and reasoning tokens change this; the cost calculator handles all three.
Does Claude Sonnet 5.5 have prompt caching or long-context pricing?
Cached input tokens cost $0.20 per 1M, 90% less than fresh input. There is no separate long-context rate in the price table. The context window is 1M tokens.
What is cheaper than Claude Sonnet 5.5?
Among the models priced closest to it, Claude Haiku 4.5 (Anthropic, $1.00 in / $5.00 out, $4.50 per 1,000 chatbot replies) and Gemini 3.8 Flash (Google, $1.50 in / $7.50 out, $6.75 per 1,000 chatbot replies) cost less. Price is not quality: compare them on your own prompts before switching.
Related tools
- Free toolLLM API cost calculatorCost per call, day and month across Claude, GPT and Gemini, with caching and long-context rates.
- Free toolToken counterCount a text's tokens and check which context windows it fits.
- GuideLLM API pricing: every modelInput and output prices for every model we track, side by side.
Sources
- Anthropic API pricing — Anthropic
