Claude Sonnet 5
Pricing & Specs
Anthropic · $3 input / $15 output per 1M tokens · 1M context window
The per-token price never tells the full story. A typical task (1K input + 500 output tokens) on Claude Sonnet 5 costs about $0.0105 — roughly $10.50 per 1,000 runs. But if it needs 3x the tokens of a cheaper model to match quality on YOUR task, the economics flip. The only way to know is to benchmark it on your actual workload.
Claude Sonnet 5 API Pricing
| Tokens | Price |
|---|---|
| Input | $3 / 1M tokens |
| Output | $15 / 1M tokens |
| Cached input | $0.3 / 1M tokens |
50% discount available for batch API requests. Cache writes and cache hits or refreshes are billed separately.
What that means in practice
Claude Sonnet 5 Specs
| Spec | Value |
|---|---|
| Context window | 1M tokens |
| Max output tokens | 128K tokens |
| Input modalities | text, image |
| Output modalities | text |
| Reasoning model | Yes |
| Tool / function calling | Yes |
| JSON mode | Yes |
| Streaming | Yes |
| Prompt caching | Yes |
| Batch API | Yes |
Notes
Adaptive thinking on by default. New tokenizer produces ~30% more tokens than Sonnet 4.6. Temperature/top_p/top_k not supported.
FAQ
How much does Claude Sonnet 5 cost?
Claude Sonnet 5 costs $3 per 1M input tokens and $15 per 1M output tokens ($0.3 per 1M cached input tokens).
What is Claude Sonnet 5's context window?
Claude Sonnet 5 has a 1M-token context window. Maximum output is 128K tokens.
Can I test Claude Sonnet 5 on my own task?
Yes. OpenMark lets you benchmark Claude Sonnet 5 against 100+ models on your own task with real API calls — no API keys needed, free tier available.
Is Claude Sonnet 5 the right model for YOUR task?
Pricing tables can't answer that. Benchmark it against 100+ models
on your actual workload — real API calls, real costs. Free tier available.