Availability

Publicly available

Provider

Anthropic

Country

USA

Family

Claude

Status

Legacy

Weights

Closed

Release date

2025-11-24T00:00:00.000Z

Modalities

text (both)

Input per million tokens

5 USD

Output per million tokens

25 USD

Price effective from

2026-09-25T00:00:00.000Z

Knowledge cutoff

2025-05-01T00:00:00.000Z

Aliases

claude-opus-4-5, claude-opus-4-5-20251101

Capabilities

• reasoning · primary
• tool_use
• structured_output

Traits

• context_window200,000 tokens
• max_output_tokens64,000 tokens

Coding

• SWE-bench Verified80.9 percent

  pass@1 · higher is better · 2025-11-24T00:00:00.000ZSource

Reasoning

• GPQA Diamond86.95 percent

  accuracy · higher is better · 2025-11-24T00:00:00.000ZSource