All comparisons

GPT-4 Turbo vs o3

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

	GPT-4 Turbo OpenAI	o3 OpenAI
Released	2024-04-09	2025-03-31
Context window	128K	128K
Parameters	1.76T (8x222B MoE)*	—
Architecture	mixture of experts	decoder only
License	Proprietary	Unknown
Knowledge cutoff	2023-12	—
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	OpenAI APIAzure OpenAISalesforce Einstein Generative AIOpenRouterOpenAI Batch APIReplicate API	OpenAI APIOpenRouterOpenAI Batch API

Benchmarks

Massive Multitask Language Understanding86.5—Chatbot Arena1242.01412.0MMLU PRO69.4—HumanEval—96.7SWE-bench Verified—71.7LiveCodeBench—79.1Aider Polyglot—81.3Google-Proof Q&A—87.7Massive Multi-discipline Multimodal Understanding—82.9