Claude Sonnet 5 API Pricing: Cost Calculator & Real Examples (2026)
Claude Sonnet 5 charges $2.00 per 1 million input tokens and $10.00 per 1 million output tokens. But per-token prices don't answer the real question: what will your workload cost per month? Below we compute it for three realistic scenarios — or run your own numbers with Claude Sonnet 5 preselected.
| Meter | Price per 1M tokens |
|---|---|
| Input | $2.00 |
| Cached input | $0.20 |
| Output | $10.00 |
Note: Anthropic made the launch price the standard price; the previously planned September increase was cancelled.
What does Claude Sonnet 5 cost in practice?
| Monthly scenario | Token bill |
|---|---|
| Support chatbot (150k requests, 400 in / 300 out tokens) | $570.00 |
| Document workflow (22k runs, 3,000 in / 400 out tokens) | $220.00 |
| High-volume classifier (1M requests, 300 in / 10 out tokens) | $700.00 |
In the chatbot scenario, output is ~79% of the Claude Sonnet 5 bill — capping response length (max tokens) is the most direct optimization. Document workflows are input-heavy, so the input rate dominates there.
Prompt caching savings
Claude Sonnet 5 offers cached input at $0.20/1M (vs $2.00 standard). At a 60% cache-hit rate, the example chatbot drops from $570.00 to $505.20/month — saving $64.80. If your system prompt and context are stable, this discount is free money.
Is Claude Sonnet 5 cheap or expensive?
On the same chatbot workload, Claude Sonnet 5 is cheaper than 5 of the 11 models we track (position 7 of 12, cheapest to priciest). The nearest cheaper alternative is Mistral Medium 3.5 ($427.50/month on the same scenario). One step up: GPT-5.6 Terra ($660.00/month). The right decision isn't absolute price but the cheapest model that meets your quality bar — test before overpaying.
FAQ
How much does Claude Sonnet 5 cost per 1M tokens?
$2.00 per 1M input tokens and $10.00 per 1M output tokens (verified 2026-09-17).
What does a chatbot cost on Claude Sonnet 5?
A 500-active-user chatbot (10 questions/day, 400 input + 300 output tokens per request) costs ~$570.00/month in tokens on Claude Sonnet 5. Adjust the assumptions in the calculator.
Our take on this model
Sonnet 5 is Anthropic's mid-tier at $2 input and $10 output per million tokens. Anthropic made that launch price permanent and cancelled the previously planned September increase, removing a major uncertainty from annual budgets.
It is a natural head-to-head against Terra: the same input rate, a lower output rate, and different task strengths. For developer tooling or structured workflows, benchmark the pair on your own evaluation set instead of choosing from price alone.
Prices verified on 2026-09-17 against the provider's official pricing page. Estimates are for planning purposes only — always confirm current pricing with the provider.