Claude Sonnet 4
Merge Gateway
Claude Sonnet 4 by Merge Gateway costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with a 200K-token context window.
Pricing
Input (per 1M tokens)
$3.00
Output (per 1M tokens)
$15.00
Cached input (per 1M)
$0.30
Specifications
- Provider
- Merge Gateway
- Context window
- 200K tokens
- Parameters
- —
- Released
- May 2025
- Open weights
- No
- Frontier model
- No
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FAQ
How much does Claude Sonnet 4 cost?
Claude Sonnet 4 is priced at $3.00 per 1M input tokens and $15.00 per 1M output tokens. Output tokens cost more than input.
What is Claude Sonnet 4's context window?
Claude Sonnet 4 supports a context window of 200K tokens — the maximum prompt plus response length it can handle in a single request.
Is Claude Sonnet 4 open weight?
No — Claude Sonnet 4 is a closed/proprietary model accessed via API.
Data as of 2026-10-22. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.