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DeepSeek V3 vs Claude Fable 5

At a glance
DeepSeekDeepSeek V3

Original DeepSeek V3 — the model that put DeepSeek on the map.

79128K ctx$0.20/$0.80 per M#29/92
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
DeepSeekDeepSeek V3
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI78.7
Reasoning & Knowledge
Graduate Science56.5%Factual Recall—
Math
Math Problems64.9%Competition Math15.8%Research Math1.7%
Coding
Code Editing70.2%
Agentic
Task Horizon18min
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%Research Math—
Coding
Code Editing—
Agentic
Task Horizon—
Specs
DeepSeekDeepSeek V3
128K
Context
16K
Max output
Dec 2024
Released
AnthropicClaude Fable 5
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
DeepSeekDeepSeek V3
Vision
Audio
Reasoning
AnthropicClaude Fable 5
Vision
Audio
Reasoning
Pricing
DeepSeekDeepSeek V3
Live pricing, shown before you run
Input$0.20/M tokens
Output$0.80/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 DeepSeek V3Go to model
Chat with Claude Fable 5Go to model
Frequently Asked Questions: DeepSeek V3 vs Claude Fable 5▼

Which is better, DeepSeek V3 or Claude Fable 5?

▼

Based on the Capability Index, Claude Fable 5 scores higher (91.6 vs 78.7). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, DeepSeek V3 or Claude Fable 5?

▼

DeepSeek V3 has a lower blended cost. DeepSeek V3: $0.20 input / $0.80 output. Claude Fable 5: $10.00 input / $50.00 output.

Which has a larger context window, DeepSeek V3 or Claude Fable 5?

▼

Claude Fable 5 has a larger context window: DeepSeek V3 supports 128K tokens vs Claude Fable 5 at 1M tokens.

Do both DeepSeek V3 and Claude Fable 5 support vision?

▼

Claude Fable 5 supports vision/image input, but DeepSeek V3 does not.

What are the key differences between DeepSeek V3 and Claude Fable 5?

▼

Key differences: Claude Fable 5 has a notably higher capability index (12.9 point gap); DeepSeek V3 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 DeepSeek V3 and Claude Fable 5 for free on idapt.app to see which performs better for your specific needs.

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