GPT-5 vs Kimi K2 Thinking
Compare GPT-5 by OpenAI against Kimi K2 Thinking by Moonshot AI, in 10 community votes, gpt-5 wins 70% of head-to-head duels, context windows of 400K vs 262K, tested across 51 shared challenges. Updated April 2026.
Which is better, GPT-5 or Kimi K2 Thinking?
GPT-5 is the better choice overall, winning 70% of 10 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $0.6/M for Kimi K2 Thinking. Context windows: 400K vs 262K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 and Kimi K2 Thinking
GPT-5 is made by openai while Kimi K2 Thinking is from moonshotai. GPT-5 has a 400K token context window compared to Kimi K2 Thinking's 262K. On pricing, GPT-5 costs $1.25/M input tokens vs $0.6/M for Kimi K2 Thinking. In community voting, In 10 community votes, GPT-5 wins 70% of head-to-head duels.
In 10 community votes, GPT-5 wins 70% of head-to-head duels. GPT-5 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 10+ human preference judgments for this pair.
Pick GPT-5. In 10 blind votes, GPT-5 wins 70% of the time. That's not luck.
GPT-5 particularly excels in Image Generation, Web Design. Kimi K2 Thinking is 4.0x cheaper per token — worth considering if cost matters.
Style Comparison
Kimi K2 Thinking uses 30.9x more bold
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.
