Skip to main content
idapt
HomeAI ModelsExploreResourcesPricing
Sign inUse for Free
  • Home
  • Pricing
  • AI Models
  • Skills
  • Image models
  • Voice models
  • Video models
  • Rankings
  • Multi-Model Chat
  • Agents
  • Computers
  • Drive
  • Actions
  • AI Gateway
  • All features →
  • Blog
  • About
  • Comparisons
  • Benchmarks
  • Model Match
  • Demos
  • Help center
  • FAQ
  • Privacy
  • Support
  • Developers
  • Quickstarts
  • API reference
  • API pricing
  • CLI
  • MCP
  • Migrate
  • Downloads
  • Desktop
© idapt[email protected]TermsPrivacy PolicyLegal noticeReport content
X (Twitter)Discord

Llama 3.1 405B vs GPT 6 Luna

At a glance

Meta's largest open-weight model at 405B parameters.

63131K ctx#66/92

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
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI· as of 2026-10-02
Capability
CapabilityECI62.7
Reasoning & Knowledge
Graduate Science50.9%Factual Recall—
Math
Math Problems49.8%Competition Math9.7%
Agentic
Novel Reasoning—
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Capability
Capability—
Reasoning & Knowledge
Graduate Science78%90.5%Factual Recall41.4%
Math
Math Problems—Competition Math917%98.9%
Agentic
Novel Reasoning59.3%
Specs
131K
Context
16K
Max output
—
Released
1.1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Pricing not available
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 search$0.01/search
Chat with Llama 3.1 405BGo to model
Chat with GPT 6 LunaGo to model
Frequently Asked Questions: Llama 3.1 405B vs GPT 6 Luna▼

Which is better, Llama 3.1 405B or GPT 6 Luna?

▼

Both Llama 3.1 405B 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 has a larger context window, Llama 3.1 405B or GPT 6 Luna?

▼

GPT 6 Luna has a larger context window: Llama 3.1 405B supports 131K tokens vs GPT 6 Luna at 1.1M tokens.

Do both Llama 3.1 405B and GPT 6 Luna support vision?

▼

GPT 6 Luna supports vision/image input, but Llama 3.1 405B does not.

What are the key differences between Llama 3.1 405B and GPT 6 Luna?

▼

Key differences: only GPT 6 Luna supports vision input; only GPT 6 Luna 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 Llama 3.1 405B and GPT 6 Luna for free on idapt.app to see which performs better for your specific needs.

Open in App