All comparisons

GPT-5 vs GPT-4o (08-06)

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

	GPT-5 OpenAI	GPT-4o (08-06) OpenAI
Released	2025-01-21	2024-08-06
Context window	128K	128K
Parameters	—	1.76T (8x222B MoE)*
Architecture	decoder only	mixture of experts
License	Proprietary	Proprietary
Knowledge cutoff	—	2023-10
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	Replicate API	OpenAI APISalesforce Einstein Generative AIOpenRouterOpenAI Batch API

Benchmarks

SWE-bench Verified74.9—Aider Polyglot—23.1