Mistral Devstral Small 1.1 vs xAI: Grok 4 Fast (free)
Compare Mistral Devstral Small 1.1 by Mistral AI against xAI: Grok 4 Fast (free) by xAI, tested across 35 shared challenges. Updated April 2026.
Which is better, Mistral Devstral Small 1.1 or xAI: Grok 4 Fast (free)?
Mistral Devstral Small 1.1 and xAI: Grok 4 Fast (free) are both competitive models. Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0/M for xAI: Grok 4 Fast (free). Compare their real outputs side by side below.
Key Differences Between Mistral Devstral Small 1.1 and xAI: Grok 4 Fast (free)
Mistral Devstral Small 1.1 is made by mistral while xAI: Grok 4 Fast (free) is from xai. On pricing, Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0/M for xAI: Grok 4 Fast (free).
No community votes yet. On paper, xAI: Grok 4 Fast (free) has the edge — bigger model tier, newer, bigger context window, major provider backing.
Style Comparison
xAI: Grok 4 Fast (free) uses 32.6x more headings
vs
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.
