Claude Sonnet 4.5 | MCP Atlas Public, April 2026 update

Anthropic's Claude Sonnet 4.5 evaluation results on MCP Atlas Public, April 2026 update

Score: 59.50±3.10

Reasoning level: thinking

Source

Claude Sonnet 4.5 (Registry No. 20005)

Anthropic

MCP Atlas Public, April 2026 update