Current benchmark matchup
Claude Fable 5 vs Claude Opus 4.8
Compare current scores, source confidence, price, context, capabilities, and focused Design Arena results for both models.
Claude Fable 5
Anthropic
Vibe Coding Index
67.0
High confidence
Claude Opus 4.8
Anthropic
Vibe Coding Index
62.0
High confidence
Current VCI result
Claude Fable 5 leads by 5.0 VCI points.
This result follows the current published source evidence and can change when a scheduled refresh finds newer measurements.
Exact score differences
Side-by-side benchmark data
Measure
Claude Fable 5
Claude Opus 4.8
Vibe Coding Index
67.0
62.0
Intelligence
59.9
55.7
Coding
81.3
76.4
Agentic
52.8
47.2
Blended price
$22
$10
Context window
1,000,000
1,000,000
Claude Fable 5 evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatStopStructured outputs
Claude Opus 4.8 evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatStopStructured outputs