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GPT 6 Luna Pro vs Gemini 2.5 Flash Lite

At a glance

OpenAI's GPT-6 Luna served in pro reasoning mode for the hardest problems.

1.1M ctx$0.10/$0.50 per M

Ultra-fast and cost-efficient for high-throughput tasks.

1.0M ctx$0.10/$0.40 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
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper13%
Specs
1.1M
Context
128K
Max output
Sep 2026
Released
1.0M
Context
66K
Max output
Jul 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$0.10/M tokens
Output$0.50/M tokens
Cache read$0.01/M tokens
Cache write$0.13/M tokens
Web search29%$0.01/search
Live pricing, shown before you run
Input$0.10/M tokens
Output20%$0.40/M tokens
Reasoning$0.40/M tokens
Cache read$0.01/M tokens
Cache write33%$0.08/M tokens
Image input$0.10/M tokens
Audio input$0.30/M tokens
Web search$0.01/search
Chat with GPT 6 Luna ProGo to model
Chat with Gemini 2.5 Flash LiteGo to model
Frequently Asked Questions: GPT 6 Luna Pro vs Gemini 2.5 Flash Lite▼

Which is better, GPT 6 Luna Pro or Gemini 2.5 Flash Lite?

▼

Both GPT 6 Luna Pro and Gemini 2.5 Flash Lite 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, GPT 6 Luna Pro or Gemini 2.5 Flash Lite?

▼

Gemini 2.5 Flash Lite has a lower blended cost. GPT 6 Luna Pro: $0.10 input / $0.50 output. Gemini 2.5 Flash Lite: $0.10 input / $0.40 output.

Which has a larger context window, GPT 6 Luna Pro or Gemini 2.5 Flash Lite?

▼

GPT 6 Luna Pro has a larger context window: GPT 6 Luna Pro supports 1.1M tokens vs Gemini 2.5 Flash Lite at 1M tokens.

Do both GPT 6 Luna Pro and Gemini 2.5 Flash Lite support vision?

▼

Yes, both GPT 6 Luna Pro and Gemini 2.5 Flash Lite support vision/image input.

What are the key differences between GPT 6 Luna Pro and Gemini 2.5 Flash Lite?

▼

Key differences: only GPT 6 Luna Pro offers extended reasoning mode. 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 GPT 6 Luna Pro and Gemini 2.5 Flash Lite for free on idapt.app to see which performs better for your specific needs.

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