xAI: Grok 4 Fast (free) vs Mistral Medium 3
Compare xAI: Grok 4 Fast (free) by xAI against Mistral Medium 3 by Mistral AI, context windows of 2.0M vs 131K, tested across 35 shared challenges. Updated April 2026.
Which is better, xAI: Grok 4 Fast (free) or Mistral Medium 3?
xAI: Grok 4 Fast (free) and Mistral Medium 3 are both competitive models. xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.4/M for Mistral Medium 3. Context windows: 2000K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 Fast (free) and Mistral Medium 3
xAI: Grok 4 Fast (free) is made by xai while Mistral Medium 3 is from mistral. xAI: Grok 4 Fast (free) has a 2000K token context window compared to Mistral Medium 3's 131K. On pricing, xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0.4/M for Mistral Medium 3.
No community votes yet. On paper, xAI: Grok 4 Fast (free) has the edge — newer, bigger context window, major provider backing.
Style Comparison
Mistral Medium 3 uses 6.0x more emoji
vsAsk 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.
