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GPT 5.6 Luna vs Gemini 2.5 Pro (05-06)

At a glance

OpenAI's fastest, most affordable GPT-5.6 tier for high-volume, latency-sensitive work.

1.1M ctx$1.00/$6.00 per M

Earlier Gemini 2.5 Pro preview release from May 2025.

751.0M ctx$1.25/$10.00 per M#41/92
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
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Cheaper35%
Capability
Capability—
Reasoning & Knowledge
Graduate Science38%92.3%Expert-Level—
Math
Math Problems—
Coding
Code Editing—
Agentic
Terminal Tasks84.7%
Reasoning
CodingInsufficient data
AgenticInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.3
Reasoning & Knowledge
Graduate Science66.7%Expert-Level17.8%
Math
Math Problems95.9%
Coding
Code Editing76.9%
Agentic
Terminal Tasks—
Specs
1.1M
Context
128K
Max output
Jul 2026
Released
1.0M
Context
66K
Max output
May 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input20%$1.00/M tokens
Output40%$6.00/M tokens
Cache read20%$0.10/M tokens
Cache write$1.25/M tokens
Web search29%$0.01/search
Live pricing, shown before you run
Input$1.25/M tokens
Output$10.00/M tokens
Reasoning$10.00/M tokens
Cache read$0.13/M tokens
Cache write70%$0.38/M tokens
Image input$1.25/M tokens
Audio input$1.25/M tokens
Web search$0.01/search
Chat with GPT 5.6 LunaGo to model
Chat with Gemini 2.5 Pro (05-06)Go to model
Frequently Asked Questions: GPT 5.6 Luna vs Gemini 2.5 Pro (05-06)▼

Which is better, GPT 5.6 Luna or Gemini 2.5 Pro (05-06)?

▼

Both GPT 5.6 Luna and Gemini 2.5 Pro (05-06) 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 5.6 Luna or Gemini 2.5 Pro (05-06)?

▼

GPT 5.6 Luna has a lower blended cost. GPT 5.6 Luna: $1.00 input / $6.00 output. Gemini 2.5 Pro (05-06): $1.25 input / $10.00 output.

Which has a larger context window, GPT 5.6 Luna or Gemini 2.5 Pro (05-06)?

▼

GPT 5.6 Luna has a larger context window: GPT 5.6 Luna supports 1.1M tokens vs Gemini 2.5 Pro (05-06) at 1M tokens.

Do both GPT 5.6 Luna and Gemini 2.5 Pro (05-06) support vision?

▼

Yes, both GPT 5.6 Luna and Gemini 2.5 Pro (05-06) support vision/image input.

What are the key differences between GPT 5.6 Luna and Gemini 2.5 Pro (05-06)?

▼

GPT 5.6 Luna and Gemini 2.5 Pro (05-06) have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 5.6 Luna and Gemini 2.5 Pro (05-06) for free on idapt.app to see which performs better for your specific needs.

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