Grok 4.6 vs DeepSeek-V4 Pro
Head-to-head technical comparison of intelligence, capabilities, and API pricing.
Which should you use?
Grok 4.6 leads on the composite index by 2 points (93.8 vs 91.8).
Cost is the sharper difference: Grok 4.6 is 1.5x the input price of DeepSeek-V4 Pro ($2 against $1.32 per 1M), so at volume the choice is usually decided by budget rather than benchmarks.
Pick Grok 4.6 when
- Higher composite index — 93.8 against 91.8, a gap of 2 points.
- Ahead on Arena Elo by 21 points (1470 vs 1449), which is outside the board's published confidence intervals.
- Stronger on MMLU-Pro: 93.1% against 91.8%.
Pick DeepSeek-V4 Pro when
- Cheaper input tokens — $1.32 against $2 per 1M, so Grok 4.6 costs 1.5x as much to feed.
- Better value per point of measured capability: $0.014 per index point against $0.021.
Value per point of measured capability, at list input pricing: DeepSeek-V4 Pro $0.014 · Grok 4.6 $0.021 per index point. Run your own token mix through the token cost calculator — a comparison at list price ignores caching and batch discounts, which move real bills more than this gap does.
Where these numbers come from
Figures as of 2026-09-07. Arena Elo and pricing are read from the public board and each vendor's own pricing page; see the full leaderboard for all 34 models and which columns are measured rather than estimated, or the benchmark matrix for scores benchmark by benchmark.
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