All comparisons

GPT-5 vs DeepSeek V4 Pro

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

	GPT-5 OpenAI	DeepSeek V4 Pro DeepSeek
Released	2025-01-21	2026-04-24
Context window	128K	1M
Parameters	—	1.6T
Architecture	decoder only	mixture of experts
License	Proprietary	MIT
Knowledge cutoff	—	—
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	Replicate APIOpenRouter	—

Benchmarks

SWE-bench Verified74.9—