FFree
Claude-sonnetClosed Weights

Claude Sonnet 4.5

claude-sonnet-4-5-20250929

Best Input Price

$0.43 / 1M

Balanced Claude model for coding, analysis, agent workflows, and cost control

Context Window

1,000,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2025-09-29

Inference Providers (5)

ProviderModel IDContextInput / 1MOutput / 1MAction
QiHangclaude-sonnet-4-5-20250929200,000$0.43$2.14Docs ↗
Jiekou.AIclaude-sonnet-4-5-20250929200,000$2.70$13.50Docs ↗
Anthropicclaude-sonnet-4-5-202509291,000,000$3.00$15.00Docs ↗
302.AIclaude-sonnet-4-5-20250929200,000$3.00$15.00Docs ↗
Heliconeclaude-sonnet-4-5-20250929200,000$3.00$15.00Docs ↗