Current benchmark matchup
Claude Opus 5 vs Grok 4.5
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
Grok 4.5
xAI
Vibe Coding Index
60.3
High confidence
Current VCI result
Claude Opus 5 leads by 6.3 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
Grok 4.5
Vibe Coding Index
66.6
60.3
Intelligence
61.0
53.8
Coding
78.0
74.6
Agentic
55.0
45.7
Blended price
$10
$3
Context window
1,000,000
500,000
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.
Grok 4.5 evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Frequency penaltyInclude reasoningLogprobsMax tokensPresence penaltyReasoningReasoning effortResponse format
