Model Comparison

R1 1776
vs. Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

Comparing 2 AI models · 0 benchmarks · Perplexity, Anthropic

Recommended Pick

Anthropic logoClaude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)2 metric wins

Strongest on: Reasoning, Intelligence

Lowest Price

Anthropic logo

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

$10.00/1M input price

Best Reasoning

Anthropic logo

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

65.7 reasoning score

Blends available reasoning benchmarks

Best for Coding

Anthropic logo

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

81.6 coding index

Differences That Matter

Reasoning gap

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) leads R1 1776 by 59.7 points on reasoning.

Top-pick rationale

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) wins 2 measurable categories, including Reasoning, Intelligence.

Live compare

Response Face-Off

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Perplexity logo

R1 1776

Perplexity

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting
Anthropic logo

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

Anthropic

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting

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Full Comparison

Metric
Perplexity logoR1 1776
Perplexity
Top Pick
Anthropic logoClaude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)
Anthropic
Pricing per 1M tokens
Input Cost$10.00/1M
Output Cost$50.00/1M
Blended (3:1)$20.00/1M
Specifications
OrganizationPerplexityAnthropic
Release DateFeb 18, 2025Sep 1, 2026
Performance & Speed
Throughput66.5 tok/s
TTFT282340ms
Latency282340ms
Composite Indices
Value Score100.0
Reasoning Score6.065.7
Intelligence6.065.7
Coding81.6

Key Takeaways

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) offers the best value at $10.00/1M,making it ideal for high-volume applications and cost-conscious projects.

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) has the strongest reasoning profile with a 65.7 reasoning score,combining the available reasoning-heavy benchmarks.

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) reaches a 81.6 coding index,making it the top choice for software development and code generation tasks.

All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.

When to Choose Each Model

Perplexity logo

R1 1776

  • General-purpose AI
  • Versatile applications
Anthropic logo

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

  • Cost-sensitive applications
  • High-volume processing
  • Complex reasoning tasks
  • Research & analysis
  • Code generation
  • Software development