GPT-5 vs Kimi K2
Compare GPT-5 by OpenAI against Kimi K2 by Moonshot AI, in 9 community votes, kimi k2 wins 56% of head-to-head duels, tested across 52 shared challenges. Updated May 2026.
Which is better, GPT-5 or Kimi K2?
Kimi K2 is the better choice overall, winning 56% of 9 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.
Key Differences Between GPT-5 and Kimi K2
GPT-5 is made by openai while Kimi K2 is from moonshotai. On pricing, GPT-5 costs $1.25/M input tokens vs $0.57/M for Kimi K2. In community voting, In 9 community votes, Kimi K2 wins 56% of head-to-head duels.
In 9 community votes, Kimi K2 wins 56% of head-to-head duels. Kimi K2 leads in Conversation. Based on blind community voting from the Rival open dataset of 9+ human preference judgments for this pair.
Per 1M tokens
Kimi K2 is cheaper on both — 2.2× input, 4.3× output
Kimi K2 has the edge overall. In 9 blind votes, Kimi K2 wins 56% of the time.
Kimi K2 particularly excels in Conversation. Kimi K2 is 4.3x cheaper per token — worth considering if cost matters.
Style Comparison
Kimi K2 uses 68.5x more emoji
