Compare xAI: Grok 4 Fast (free) by xAI against MiniMax M2.7 by MiniMax, context windows of 2.0M vs 205K, tested across 34 shared challenges. Updated April 2026.
xAI: Grok 4 Fast (free) and MiniMax M2.7 are both competitive models. xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.3/M for MiniMax M2.7. Context windows: 2000K vs 205K tokens. Compare their real outputs side by side below.
xAI: Grok 4 Fast (free) is made by xai while MiniMax M2.7 is from minimax. xAI: Grok 4 Fast (free) has a 2000K token context window compared to MiniMax M2.7's 205K. On pricing, xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.3/M for MiniMax M2.7.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MiniMax M2.7 uses 28.4x more emoji
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare xAI: Grok 4 Fast (free) by xAI against MiniMax M2.7 by MiniMax, context windows of 2.0M vs 205K, tested across 34 shared challenges. Updated April 2026.
xAI: Grok 4 Fast (free) and MiniMax M2.7 are both competitive models. xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.3/M for MiniMax M2.7. Context windows: 2000K vs 205K tokens. Compare their real outputs side by side below.
xAI: Grok 4 Fast (free) is made by xai while MiniMax M2.7 is from minimax. xAI: Grok 4 Fast (free) has a 2000K token context window compared to MiniMax M2.7's 205K. On pricing, xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.3/M for MiniMax M2.7.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MiniMax M2.7 uses 28.4x more emoji
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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34 fights queued
22+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy