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GPT 6 Luna Pro vs Seed 1.6

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

ByteDance's flagship language model with top reasoning capabilities.

262K ctx$0.25/$2.00 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
Cheaper71%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1.1M
Context
128K
Max output
Sep 2026
Released
262K
Context
33K
Max output
Dec 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input60%$0.10/M tokens
Output75%$0.50/M tokens
Cache read$0.01/M tokens
Cache write$0.13/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$0.25/M tokens
Output$2.00/M tokens
Chat with GPT 6 Luna ProGo to model
Chat with Seed 1.6Go to model
Frequently Asked Questions: GPT 6 Luna Pro vs Seed 1.6▼

Which is better, GPT 6 Luna Pro or Seed 1.6?

▼

Both GPT 6 Luna Pro and Seed 1.6 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 Seed 1.6?

▼

GPT 6 Luna Pro has a lower blended cost. GPT 6 Luna Pro: $0.10 input / $0.50 output. Seed 1.6: $0.25 input / $2.00 output.

Which has a larger context window, GPT 6 Luna Pro or Seed 1.6?

▼

GPT 6 Luna Pro has a larger context window: GPT 6 Luna Pro supports 1.1M tokens vs Seed 1.6 at 262K tokens.

Do both GPT 6 Luna Pro and Seed 1.6 support vision?

▼

Yes, both GPT 6 Luna Pro and Seed 1.6 support vision/image input.

What are the key differences between GPT 6 Luna Pro and Seed 1.6?

▼

Key differences: GPT 6 Luna Pro 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 Pro and Seed 1.6 for free on idapt.app to see which performs better for your specific needs.

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