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Grok 4.20 Beta vs MiniMax M2.5

Compare Grok 4.20 Beta by xAI against MiniMax M2.5 by MiniMax, context windows of 2.0M vs 205K, tested across 53 shared challenges. Updated March 2026.

Which is better, Grok 4.20 Beta or MiniMax M2.5?

Grok 4.20 Beta and MiniMax M2.5 are both competitive models. Grok 4.20 Beta costs $2/M input tokens vs $0.3/M for MiniMax M2.5. Context windows: 2000K vs 205K tokens. Compare their real outputs side by side below.

Key Differences Between Grok 4.20 Beta and MiniMax M2.5

Grok 4.20 Beta is made by xai while MiniMax M2.5 is from minimax. Grok 4.20 Beta has a 2000K token context window compared to MiniMax M2.5's 205K. On pricing, Grok 4.20 Beta costs $2/M input tokens vs $0.3/M for MiniMax M2.5.

Our Verdict
Grok 4.20 Beta
Grok 4.20 Beta
MiniMax M2.5
MiniMax M2.5Runner-up

No community votes yet. On paper, Grok 4.20 Beta has the edge — bigger model tier, bigger context window, major provider backing.

MiniMax M2.5 is 5.0x cheaper per token — worth considering if cost matters.

Slight edge
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