Gemini 2.5 Pro Preview 06-05 vs xAI: Grok 4 Fast (free)
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against xAI: Grok 4 Fast (free) by xAI, context windows of 1.0M vs 2.0M, tested across 25 shared challenges. Updated May 2026.
Which is better, Gemini 2.5 Pro Preview 06-05 or xAI: Grok 4 Fast (free)?
Gemini 2.5 Pro Preview 06-05 and xAI: Grok 4 Fast (free) are both competitive models. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $0/M for xAI: Grok 4 Fast (free). Context windows: 1049K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Pro Preview 06-05 and xAI: Grok 4 Fast (free)
Gemini 2.5 Pro Preview 06-05 is made by google while xAI: Grok 4 Fast (free) is from xai. Gemini 2.5 Pro Preview 06-05 has a 1049K token context window compared to xAI: Grok 4 Fast (free)'s 2000K. On pricing, Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $0/M for xAI: Grok 4 Fast (free).
Per 1M tokens
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
xAI: Grok 4 Fast (free) uses 5.5x more transitions
