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Claude Fable 5 vs
Claude Sonnet 5

Read the published evidence, route context, and missing facts before making a local decision. This page does not name a universal winner.

Models in this comparison

Provider identity and evidence state stay balanced across the pair.

A
Model type
Proprietary
Evidence state
Supported evidence
Published context
1,000,000
VS
A
Model type
Proprietary
Evidence state
Estimated evidence
Published context
1,000,000

Key implications

Insufficient shared-metric coverage. Each finding is tied to a published metric, price, context, or modality fact.

  1. Input API price: Claude Sonnet 5 has the lower verified rate ($2 / 1M tokens vs $10 / 1M tokens).
  2. Output API price: Claude Sonnet 5 has the lower verified rate ($10 / 1M tokens vs $50 / 1M tokens).

Shared metric view

A radar is shown only when at least four compatible supported score metrics are published.

Comparable metric detail

  • AgenticClaude Fable 5: 75.54 · Claude Sonnet 5: 67.22
  • CodingClaude Fable 5: 81.41 · Claude Sonnet 5: 70.73
  • KnowledgeClaude Fable 5: 67.4 · Claude Sonnet 5: 84.6
  • MultimodalGroundedClaude Fable 5: 60.8 · Claude Sonnet 5: 71.8
  • OverallClaude Fable 5: 83.15 · Claude Sonnet 5: 65.02

Source metrics

Friendly metric names and published units stay visible. Missing measurements remain unavailable rather than becoming a score.

Source metric comparison
MetricUnitClaude Fable 5Claude Sonnet 5
Agenticscore75.5467.22
Codingscore81.4170.73
Knowledgescore67.484.6
MultimodalGroundedscore60.871.8
Overallscore83.1565.02

Agentic

Unit
score
Claude Fable 5
75.54
Claude Sonnet 5
67.22

Coding

Unit
score
Claude Fable 5
81.41
Claude Sonnet 5
70.73

Knowledge

Unit
score
Claude Fable 5
67.4
Claude Sonnet 5
84.6

MultimodalGrounded

Unit
score
Claude Fable 5
60.8
Claude Sonnet 5
71.8

Overall

Unit
score
Claude Fable 5
83.15
Claude Sonnet 5
65.02

Pricing and context

Verification is shown beside each selected route. Missing facts remain Not verified.

Route pricing and context comparison
FieldUnitClaude Fable 5Claude Sonnet 5
Input API priceUSD / 1M tokens$10$2
Cached input API priceUSD / 1M tokens$1$0.2
Output API priceUSD / 1M tokens$50$10
Route contexttokens1,000,0001,000,000
Input modalitiespublished listNot verifiedNot verified
Output modalitiespublished listNot verifiedNot verified

Input API price

Unit
USD / 1M tokens
Claude Fable 5
$10
Claude Sonnet 5
$2

Cached input API price

Unit
USD / 1M tokens
Claude Fable 5
$1
Claude Sonnet 5
$0.2

Output API price

Unit
USD / 1M tokens
Claude Fable 5
$50
Claude Sonnet 5
$10

Route context

Unit
tokens
Claude Fable 5
1,000,000
Claude Sonnet 5
1,000,000

Input modalities

Unit
published list
Claude Fable 5
Not verified
Claude Sonnet 5
Not verified

Output modalities

Unit
published list
Claude Fable 5
Not verified
Claude Sonnet 5
Not verified

Evidence provenance

Source records, route identity, timestamps, and methodology are consolidated here without declaring either model a winner.

Publication time
Aug 30, 2026, 2:15 AM UTC
Freshness
Stale — Published weekly benchmark evidence has not refreshed within 8 days.
Methodology
benchlm: benchlm_raw_composite
Model records
  • Claude Fable 5 — source benchlm · artifact models · model claude-fable-5
  • Claude Sonnet 5 — source benchlm · artifact models · model claude-sonnet-5
Selected price routes
  • Claude Fable 5 — route benchlm:claude-fable-5 · source benchlm · provider anthropic
  • Claude Sonnet 5 — route benchlm:claude-sonnet-5 · source benchlm · provider anthropic

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