DeepSeek V3 vs Claude Opus 4.5

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

	DeepSeek V3 DeepSeek	Claude Opus 4.5 Anthropic
Released	2024-12-26	2025-11-01
Context window	64k	200K
Parameters	671B	—
Architecture	mixture of experts	decoder only
License	Open Source	Proprietary
Knowledge cutoff	2024-04	2025-12
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	DeepInfra Fireworks AI DeepSeek Platform Microsoft Foundry OpenRouter NVIDIA NIM AWS Bedrock Together AI Bitdeer AI SiliconFlow Replicate API	Microsoft Foundry Anthropic GCP Vertex AI AWS Bedrock OpenRouter

Benchmarks

HellaSwag95.7—HumanEval85.5—Massive Multitask Language Understanding88.5—LiveCodeBench49.6—Aider Polyglot48.4—BigCodeBench50.0—Chatbot Arena1302.0—MMLU PRO75.988.9Massive Multi-discipline Multimodal Understanding—80.7BFCL—77.5SWE-bench Pro—41.8

Full DeepSeek V3 specs →Full Claude Opus 4.5 specs →