GPT-3.5 Turbo vs xAI: Grok 4
Compare GPT-3.5 Turbo by OpenAI against xAI: Grok 4 by xAI, context windows of 16K vs 256K, tested across 53 shared challenges. Updated May 2026.
Which is better, GPT-3.5 Turbo or xAI: Grok 4?
GPT-3.5 Turbo and xAI: Grok 4 are both competitive models. GPT-3.5 Turbo costs $1.5/M input tokens vs $3/M for xAI: Grok 4. Context windows: 16K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-3.5 Turbo and xAI: Grok 4
GPT-3.5 Turbo is made by openai while xAI: Grok 4 is from xai. GPT-3.5 Turbo has a 16K token context window compared to xAI: Grok 4's 256K. On pricing, GPT-3.5 Turbo costs $1.5/M input tokens vs $3/M for xAI: Grok 4.
Per 1M tokens
GPT-3.5 Turbo is cheaper on both — 2.0× input, 7.5× output
No community votes yet. On paper, xAI: Grok 4 has the edge — bigger model tier, newer, bigger context window.
GPT-3.5 Turbo is 7.5x cheaper per token — worth considering if cost matters.
Style Comparison
xAI: Grok 4 uses 267.9x more bold
