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Gemini 3.5 Flash vs GPT 6 Luna

At a glance

Google's high-speed thinking model for agentic workflows, chat, and coding.

861.0M ctx$1.50/$9.00 per M#11/92

OpenAI's fastest, most affordable GPT-6 tier for high-volume, latency-sensitive work.

1.1M ctx$0.10/$0.50 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Capability
CapabilityECI86.2
Reasoning & Knowledge
Graduate Science3%92.8%Factual Recall60%66.2%
Math
Competition Math95.6%Research Math39.0%
Coding
Real-World Coding79.3%
Agentic
Novel Reasoning22%72.1%
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Cheaper94%
Capability
Capability—
Reasoning & Knowledge
Graduate Science90.5%Factual Recall41.4%
Math
Competition Math3%98.9%Research Math—
Coding
Real-World Coding—
Agentic
Novel Reasoning59.3%
Specs
1.0M
Context
66K
Max output
May 2026
Released
1.1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.50/M tokens
Output$9.00/M tokens
Reasoning$9.00/M tokens
Cache read$0.15/M tokens
Cache write33%$0.08/M tokens
Image input$1.50/M tokens
Audio input$3.00/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input93%$0.10/M tokens
Output94%$0.50/M tokens
Cache read93%$0.01/M tokens
Cache write$0.13/M tokens
Web search29%$0.01/search
Chat with Gemini 3.5 FlashGo to model
Chat with GPT 6 LunaGo to model
Frequently Asked Questions: Gemini 3.5 Flash vs GPT 6 Luna▼

Which is better, Gemini 3.5 Flash or GPT 6 Luna?

▼

Both Gemini 3.5 Flash and GPT 6 Luna are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Gemini 3.5 Flash or GPT 6 Luna?

▼

GPT 6 Luna has a lower blended cost. Gemini 3.5 Flash: $1.50 input / $9.00 output. GPT 6 Luna: $0.10 input / $0.50 output.

Which has a larger context window, Gemini 3.5 Flash or GPT 6 Luna?

▼

GPT 6 Luna has a larger context window: Gemini 3.5 Flash supports 1M tokens vs GPT 6 Luna at 1.1M tokens.

Do both Gemini 3.5 Flash and GPT 6 Luna support vision?

▼

Yes, both Gemini 3.5 Flash and GPT 6 Luna support vision/image input.

What are the key differences between Gemini 3.5 Flash and GPT 6 Luna?

▼

Key differences: GPT 6 Luna is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.5 Flash and GPT 6 Luna for free on idapt.app to see which performs better for your specific needs.

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