Claude Fable 5 vs
Claude Opus 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

Anthropic

Claude Opus 5

Model type
Proprietary
Evidence state
Supported evidence
Published context
Not verified

Key implications

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

  1. Across compatible supported BenchLM categories, Claude Fable 5 has higher scores in Coding and Overall; Claude Opus 5 has higher scores in Knowledge and Agentic.
  2. Input API price: Claude Opus 5 has the lower verified rate ($5 / 1M tokens vs $10 / 1M tokens).
  3. Output API price: Claude Opus 5 has the lower verified rate ($25 / 1M tokens vs $50 / 1M tokens).

Shared metric view

The radar is a per-axis relative view; exact values and units remain available in its adjacent table.

Per-axis relative view: each axis scales to the higher published value for that exact shared metric. The table preserves the exact published values and units.
  • Claude Fable 5: solid line
  • Claude Opus 5: dashed line
Claude Fable 5 and Claude Opus 5 shared metric radarAgenticCodingKnowledgeOverall
Exact published values used in the per-axis relative radar chart.
MetricClaude Fable 5Claude Opus 5Unit
Agentic75.5480.13score
Coding81.4178.41score
Knowledge67.497score
Overall83.1583.06score

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 Opus 5
Agenticscore75.5480.13
Codingscore81.4178.41
Knowledgescore67.497
MultimodalGroundedscore60.885.9
ReasoningscoreUnavailable83.5
Overallscore83.1583.06

Agentic

Unit
score
Claude Fable 5
75.54
Claude Opus 5
80.13

Coding

Unit
score
Claude Fable 5
81.41
Claude Opus 5
78.41

Knowledge

Unit
score
Claude Fable 5
67.4
Claude Opus 5
97

MultimodalGrounded

Unit
score
Claude Fable 5
60.8
Claude Opus 5
85.9

Reasoning

Unit
score
Claude Fable 5
Unavailable
Claude Opus 5
83.5

Overall

Unit
score
Claude Fable 5
83.15
Claude Opus 5
83.06

Pricing and context

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

Route pricing and context comparison
FieldUnitClaude Fable 5Claude Opus 5
Input API priceUSD / 1M tokens$10$5
Cached input API priceUSD / 1M tokens$1$0.5
Output API priceUSD / 1M tokens$50$25
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 Opus 5
$5

Cached input API price

Unit
USD / 1M tokens
Claude Fable 5
$1
Claude Opus 5
$0.5

Output API price

Unit
USD / 1M tokens
Claude Fable 5
$50
Claude Opus 5
$25

Route context

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

Input modalities

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

Output modalities

Unit
published list
Claude Fable 5
Not verified
Claude Opus 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 Opus 5 — source benchlm · artifact models · model claude-opus-5
Selected price routes
  • Claude Fable 5 — route benchlm:claude-fable-5 · source benchlm · provider anthropic
  • Claude Opus 5 — route benchlm:claude-opus-5 · source benchlm · provider anthropic

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