All comparisons

GPT-5 vs DeepSeek V4

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

	GPT-5 OpenAI	DeepSeek V4 DeepSeek
Released	2025-01-21	2026-02-15
Context window	128K	—
Parameters	—	—
Architecture	decoder only	decoder only
License	Proprietary	Open Source
Knowledge cutoff	—	—
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	Replicate API	—

Benchmarks

SWE-bench Verified74.9—