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GPT 6 Luna vs Kimi K2.5

At a glance

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

1.1M ctx$0.10/$0.50 per M

MoonshotAI's native multimodal model with state-of-the-art visual coding.

80262K ctx$0.45/$2.25 per M#25/92
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
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Cheaper78%
Capability
Capability—
Reasoning & Knowledge
Graduate Science90.5%Expert-Level—Factual Recall21%41.4%
Math
Competition Math98.9%
Coding
Real-World Coding—
Agentic
Terminal Tasks—Novel Reasoning402%59.3%
Reasoning
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Capability
CapabilityECI80.3
Reasoning & Knowledge
Graduate Science—Expert-Level24.4%Factual Recall34.3%
Math
Competition Math—
Coding
Real-World Coding73.8%
Agentic
Terminal Tasks43.2%Novel Reasoning11.8%
Specs
1.1M
Context
128K
Max output
Sep 2026
Released
262K
Context
236K
Max output
Jan 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input78%$0.10/M tokens
Output78%$0.50/M tokens
Cache read86%$0.01/M tokens
Cache write$0.13/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$0.45/M tokens
Output$2.25/M tokens
Cache read$0.07/M tokens
Chat with GPT 6 LunaGo to model
Chat with Kimi K2.5Go to model
Frequently Asked Questions: GPT 6 Luna vs Kimi K2.5▼

Which is better, GPT 6 Luna or Kimi K2.5?

▼

Both GPT 6 Luna and Kimi K2.5 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 or Kimi K2.5?

▼

GPT 6 Luna has a lower blended cost. GPT 6 Luna: $0.10 input / $0.50 output. Kimi K2.5: $0.45 input / $2.25 output.

Which has a larger context window, GPT 6 Luna or Kimi K2.5?

▼

GPT 6 Luna has a larger context window: GPT 6 Luna supports 1.1M tokens vs Kimi K2.5 at 262K tokens.

Do both GPT 6 Luna and Kimi K2.5 support vision?

▼

Yes, both GPT 6 Luna and Kimi K2.5 support vision/image input.

What are the key differences between GPT 6 Luna and Kimi K2.5?

▼

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 GPT 6 Luna and Kimi K2.5 for free on idapt.app to see which performs better for your specific needs.

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