Availability

Publicly available

Provider

Anthropic

Country

USA

Family

Claude

Status

Legacy

Weights

Closed

Release date

2025-09-29T00:00:00.000Z

Modalities

text (both)

Input per million tokens

3 USD

Output per million tokens

15 USD

Price effective from

2026-09-25T00:00:00.000Z

Knowledge cutoff

2025-01-01T00:00:00.000Z

Deprecation date

2026-09-30T00:00:00.000Z

Retirement date

2026-11-30T00:00:00.000Z

Aliases

claude-sonnet-4-5, claude-sonnet-4-5-20250929

Capabilities

• tool_use · primary
• structured_output
• reasoning

Traits

• context_window200,000 tokens
• max_output_tokens64,000 tokens

Coding

• SWE-bench Verified77.2 percent

  pass@1 · higher is better · 2025-09-29T00:00:00.000ZSource

Agent

• OSWorld61.4 percent

  accuracy · higher is better · 2025-09-29T00:00:00.000ZSource