Grok 4.20
xAI
Proprietary
57.3
Vibe Coding Index · #19 of 21
✓ Verified data — every figure is cited. See sources.
Quality
#19/21
57.3
VCI
Price
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$/M blended
Speed
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tok/s
Latency
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to first token
Suite radar
Radar hidden — some suite scores are unverified.
Suite scores
SWE-bench Verified
Real GitHub issues fixed end-to-end
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LiveCodeBench
Fresh competitive-programming problems
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Where Grok 4.20 sits
Its dot is ringed on the cost×quality and speed×quality frontiers.