Current benchmark matchup
Kimi K3 vs Claude Opus 4.8
Compare current scores, source confidence, price, context, capabilities, and focused Design Arena results for both models.
Kimi K3
Moonshot
Vibe Coding Index
67.3
Tentative evidence
Claude Opus 4.8
Anthropic
Vibe Coding Index
62.0
High confidence
Current VCI result
Kimi K3 leads by 5.3 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
Kimi K3
Claude Opus 4.8
Vibe Coding Index
67.3
62.0
Intelligence
58.8
55.7
Coding
83.9
76.4
Agentic
50.7
47.2
Blended price
$6
$10
Context window
1,048,576
1,000,000
Kimi K3 evidence
100% core coverageA current score is published, but one or more inputs remain preliminary or launch reported.
Frequency penaltyInclude reasoningMax tokensPresence penaltyReasoningReasoning effortResponse formatStop
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