Current benchmark matchup
Claude Opus 5 vs Claude Sonnet 5
Compare current scores, source confidence, price, context, capabilities, and focused Design Arena results for both models.
Claude Opus 5
Anthropic
Vibe Coding Index
66.6
High confidence
Claude Sonnet 5
Anthropic
Vibe Coding Index
60.1
High confidence
Current VCI result
Claude Opus 5 leads by 6.5 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 Opus 5
Claude Sonnet 5
Vibe Coding Index
66.6
60.1
Intelligence
61.0
53.4
Coding
78.0
73.5
Agentic
55.0
46.7
Blended price
$10
$4
Context window
1,000,000
1,000,000
Claude Opus 5 evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Capability metadata is waiting for the next catalog refresh.
Claude Sonnet 5 evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatStopStructured outputs
