Claude 3.7 Thinking Sonnet vs Solar Pro 3
Compare Claude 3.7 Thinking Sonnet by Anthropic against Solar Pro 3 by Upstage, context windows of 200K vs 128K, tested across 39 shared challenges. Updated April 2026.
Which is better, Claude 3.7 Thinking Sonnet or Solar Pro 3?
Claude 3.7 Thinking Sonnet and Solar Pro 3 are both competitive models. Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $0/M for Solar Pro 3. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Thinking Sonnet and Solar Pro 3
Claude 3.7 Thinking Sonnet is made by anthropic while Solar Pro 3 is from upstage. Claude 3.7 Thinking Sonnet has a 200K token context window compared to Solar Pro 3's 128K. On pricing, Claude 3.7 Thinking Sonnet costs $6/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 17.3x 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.
