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Gemma 2 27B vs Claude Fable 5

At a glance
GoogleGemma 2 27B

Second-generation open model from Google DeepMind.

578K ctx$0.65/$0.65 per M#72/92
AnthropicClaude Fable 5

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

921M ctx$10.00/$50.00 per M#2/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
GoogleGemma 2 27B
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI56.8
Reasoning & Knowledge
Graduate Science36.5%Factual Recall—
Math
Math Problems27.9%Competition Math1.4%
AnthropicClaude Fable 5
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter
Capability
CapabilityECI91.6
Reasoning & Knowledge
Graduate Science—Factual Recall68.3%
Math
Math Problems—Competition Math99.7%
Specs
GoogleGemma 2 27B
8K
Context
2K
Max output
Jul 2024
Released
AnthropicClaude Fable 5
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
GoogleGemma 2 27B
Vision
Audio
Reasoning
AnthropicClaude Fable 5
Vision
Audio
Reasoning
Pricing
GoogleGemma 2 27B
Live pricing, shown before you run
Input$0.65/M tokens
Output$0.65/M tokens
AnthropicClaude Fable 5
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 Gemma 2 27BGo to model
Chat with Claude Fable 5Go to model
Frequently Asked Questions: Gemma 2 27B vs Claude Fable 5▼

Which is better, Gemma 2 27B or Claude Fable 5?

▼

Based on the Capability Index, Claude Fable 5 scores higher (91.6 vs 56.8). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Gemma 2 27B or Claude Fable 5?

▼

Gemma 2 27B has a lower blended cost. Gemma 2 27B: $0.65 input / $0.65 output. Claude Fable 5: $10.00 input / $50.00 output.

Which has a larger context window, Gemma 2 27B or Claude Fable 5?

▼

Claude Fable 5 has a larger context window: Gemma 2 27B supports 8K tokens vs Claude Fable 5 at 1M tokens.

Do both Gemma 2 27B and Claude Fable 5 support vision?

▼

Claude Fable 5 supports vision/image input, but Gemma 2 27B does not.

What are the key differences between Gemma 2 27B and Claude Fable 5?

▼

Key differences: Claude Fable 5 has a notably higher capability index (34.8 point gap); Gemma 2 27B 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 Gemma 2 27B and Claude Fable 5 for free on idapt.app to see which performs better for your specific needs.

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