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Claude Sonnet 4.5

OpenCode Zen

Claude Sonnet 4.5 by OpenCode Zen costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with a 1M-token context window.

Pricing

Input (per 1M tokens)
$3.00
Output (per 1M tokens)
$15.00
Cached input (per 1M)
$0.30

Specifications

Provider
OpenCode Zen
Context window
1M tokens
Parameters
—
Released
Sep 2025
Open weights
No
Frontier model
No

Compare Claude Sonnet 4.5 with…

Claude Sonnet 4.5 vs GPT-5.5 Pro$180.00/1MClaude Sonnet 4.5 vs GPT-5$8.50/1MClaude Sonnet 4.5 vs GLM-5.1$4.40/1MClaude Sonnet 4.5 vs Kimi K2.6$4.00/1MClaude Sonnet 4.5 vs Qwen3.6 Plus$3.00/1MClaude Sonnet 4.5 vs GPT-5.1$8.50/1M

FAQ

Pricing is per 1M tokens (USD); confirm with the provider before production use.