All comparisons

Gemini 3 Flash vs GPT-4o (05-13)

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

	Gemini 3 Flash Google DeepMind	GPT-4o (05-13) OpenAI
Released	2025-12-17	2024-05-13
Context window	1M	128K
Parameters	—	1.76T (8x222B MoE)*
Architecture	decoder only	mixture of experts
License	Proprietary	Proprietary
Knowledge cutoff	2025-01	2023-10
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
JSON mode
Code execution
Availability
Providers	Replicate API	Azure OpenAIOpenAI APIOpenRouterOpenAI Batch APIReplicate API

Benchmarks

HellaSwag—96.4HumanEval—90.2Massive Multitask Language Understanding—88.7