Skip to main content
idapt
HomeCodeAI ModelsPricing
Sign inStart free trial
  • Home
  • Pricing
  • AI Models
  • Image models
  • Voice models
  • Video models
  • Rankings
  • New models
  • Model status
  • Multi-Model Chat
  • Agents
  • Computers
  • Drive
  • Automations
  • AI Gateway
  • All features →
  • LLM cost calculator
  • Token counter
  • All free tools →
  • Blog
  • Use cases
  • Comparisons
  • Best of
  • Benchmarks
  • Demos
  • Changelog
  • Help center
  • FAQ
  • Privacy
  • Compare all models
  • Support
  • idapt Code
  • Developers
  • Quickstarts
  • API reference
  • API pricing
  • CLI
  • MCP
  • Downloads
  • Desktop
  • Badges and embeds
© idapt[email protected]TermsPrivacy PolicyLegal noticeReport content
X (Twitter)

Llama 3.1 8B vs Claude Fable 5

At a glance

Compact 8B model from Meta's Llama 3.1 series.

50131K ctx$0.05/$0.08 per M#76/92

Anthropic's Mythos-class flagship for ambitious, long-running professional work.

921M ctx$10.00/$50.00 per M#2/92
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
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper100%
Capability
CapabilityECI50.3
Reasoning & Knowledge
Graduate Science25.9%Factual Recall—
Math
Math Problems22.9%Competition Math2.5%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter82%
Capability
CapabilityECI82%91.6
Reasoning & Knowledge
Graduate Science—Factual Recall68.3%
Math
Math Problems—Competition Math3889%99.7%
Specs
131K
Context
66K
Max output
Jul 2024
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input99%$0.05/M tokens
Output100%$0.08/M tokens
Cache read98%$0.02/M tokens
Live pricing, shown before you run
Input$10.00/M tokens
Output$50.00/M tokens
Cache read$1.00/M tokens
Cache write$12.50/M tokens
Web search$0.01/search
Chat with Llama 3.1 8BGo to model
Chat with Claude Fable 5Go to model
Frequently Asked Questions: Llama 3.1 8B vs Claude Fable 5▼

Which is better, Llama 3.1 8B or Claude Fable 5?

▼

Based on the Capability Index, Claude Fable 5 scores higher (91.6 vs 50.3). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Llama 3.1 8B or Claude Fable 5?

▼

Llama 3.1 8B has a lower blended cost. Llama 3.1 8B: $0.05 input / $0.08 output. Claude Fable 5: $10.00 input / $50.00 output.

Which has a larger context window, Llama 3.1 8B or Claude Fable 5?

▼

Claude Fable 5 has a larger context window: Llama 3.1 8B supports 131K tokens vs Claude Fable 5 at 1M tokens.

Do both Llama 3.1 8B and Claude Fable 5 support vision?

▼

Claude Fable 5 supports vision/image input, but Llama 3.1 8B does not.

What are the key differences between Llama 3.1 8B and Claude Fable 5?

▼

Key differences: Claude Fable 5 has a notably higher capability index (41.3 point gap); Llama 3.1 8B is significantly cheaper; only Claude Fable 5 supports vision input; only Claude Fable 5 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 8B and Claude Fable 5 for free on idapt.app to see which performs better for your specific needs.

Open in App