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grok-4.20-beta-0309-reasoning vs DeepSeek-R1

DeepSeek-R1 is cheaper on output tokens, while grok-4.20-beta-0309-reasoning offers a larger context window. Choose grok-4.20-beta-0309-reasoning or DeepSeek-R1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Specgrok-4.20-beta-0309-reasoningDeepSeek-R1
Provider302.AIAzure
Input / 1M tokens$2.00$1.35
Output / 1M tokens$6.00$5.40
Context window2M164K
Parameters—671B
Open weightsNoYes
ReleasedMar 2026Jan 2025
LMArena (Chatbot Arena) Elo score14511428
LMArena WebDev Elo score1375—
LMArena Vision Elo score1263—
GPQA Diamond score—76.3
Epoch Capabilities Index score—141

FAQ

Is grok-4.20-beta-0309-reasoning or DeepSeek-R1 cheaper?

DeepSeek-R1 is cheaper on output tokens ($5.40 vs $6.00 per 1M).

Which has the larger context window, grok-4.20-beta-0309-reasoning or DeepSeek-R1?

grok-4.20-beta-0309-reasoning has the larger context window (2M tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.