Gemini 3.5 Flash vs GPT-5.6 Luna

Comparing two large language models (llm) models: features, pricing, pros and cons.

	Gemini 3.5 Flash	GPT-5.6 Luna
Provider	Google	OpenAI
Pricing	$10–80/mo	$20–120/mo
Quality	8.6/10	8.4/10
Speed	9.6/10	9.5/10
Ease of use	8.5/10	8.5/10
Value	8/10	8/10
Context	1000K	256K
Tasks	Text Generation, Chatbots, Coding, Data Analysis, Translation, RAG / Search	Text Generation, Chatbots, Coding, Data Analysis, Translation, RAG / Search
Pros	+ Very fast + Cheap + Mass-market default	+ High speed + Low cost + Good for high-volume tasks
Cons	− Weaker than Pro on hard tasks	− Weaker than flagships on hard reasoning

Gemini 3.5 Flash

Fast multimodal GA since May 19, 2026; default in AI Mode.

Fastest and cheapest GPT-5.6 tier for light tasks and high throughput.