Grok Code Fast 1 vs Solar Pro 3
Compare Grok Code Fast 1 by xAI against Solar Pro 3 by Upstage, context windows of 256K vs 128K, tested across 39 shared challenges. Updated April 2026.
Which is better, Grok Code Fast 1 or Solar Pro 3?
Grok Code Fast 1 and Solar Pro 3 are both competitive models. Grok Code Fast 1 costs $0.2/M input tokens vs $0/M for Solar Pro 3. Context windows: 256K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Grok Code Fast 1 and Solar Pro 3
Grok Code Fast 1 is made by xai while Solar Pro 3 is from upstage. Grok Code Fast 1 has a 256K token context window compared to Solar Pro 3's 128K. On pricing, Grok Code Fast 1 costs $0.2/M input tokens vs $0/M for Solar Pro 3.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Solar Pro 3 uses 2.9x 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.
