Current benchmark matchup
GPT-5.6 Sol vs Claude Opus 4.8
Compare current scores, source confidence, price, context, capabilities, and focused Design Arena results for both models.
GPT-5.6 Sol
OpenAI
Vibe Coding Index
66.5
High confidence
Claude Opus 4.8
Anthropic
Vibe Coding Index
62.0
High confidence
Current VCI result
GPT-5.6 Sol leads by 4.5 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
GPT-5.6 Sol
Claude Opus 4.8
Vibe Coding Index
66.5
62.0
Intelligence
57.7
55.7
Coding
81.8
76.4
Agentic
51.8
47.2
Blended price
$11.25
$10
Context window
1,050,000
1,000,000
GPT-5.6 Sol evidence
100% core coverageComplete core scores supported by at least two current verified sources.
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatSeedStructured 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