All comparisons

Claude Sonnet 4.6 vs DeepSeek V4 Pro

Side-by-side comparison of specifications, capabilities, and pricing.

	Claude Sonnet 4.6 Anthropic	DeepSeek V4 Pro DeepSeek
Released	2026-02-17	2026-04-24
Context window	1M	1M
Parameters	—	1.6T
Architecture	decoder only	mixture of experts
License	Proprietary	MIT
Knowledge cutoff	2025-12	—
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	OpenRouterAnthropicAWS BedrockGCP Vertex AI	—

Benchmarks

SWE-bench Verified79.6—MMLU PRO87.3—