ChatGPT-4o (March 2025) vs Grok 3 Mini Beta
Compare ChatGPT-4o (March 2025) by OpenAI against Grok 3 Mini Beta by xAI, context windows of 128K vs 131K, tested across 11 shared challenges. Updated April 2026.
Which is better, ChatGPT-4o (March 2025) or Grok 3 Mini Beta?
ChatGPT-4o (March 2025) and Grok 3 Mini Beta are both competitive models. ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.4/M for Grok 3 Mini Beta. Context windows: 128K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between ChatGPT-4o (March 2025) and Grok 3 Mini Beta
ChatGPT-4o (March 2025) is made by openai while Grok 3 Mini Beta is from xai. ChatGPT-4o (March 2025) has a 128K token context window compared to Grok 3 Mini Beta's 131K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.4/M for Grok 3 Mini Beta.
No community votes yet. On paper, ChatGPT-4o (March 2025) has the edge — bigger model tier.
Grok 3 Mini Beta is 19x cheaper per token — worth considering if cost matters.
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.
