GPT-5.2 vs Kimi K2 Thinking
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 5 of 8 benchmarks against Kimi K2 Thinking by Vertex, which leads on 3. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, GPT-5.2 scores 1173 on Design Arena ELO compared to Kimi K2 Thinking's 1125, while GPT-5.2 scores 1167 on Website Arena ELO compared to Kimi K2 Thinking's 1125.
Reasoning: In reasoning, GPT-5.2 scores 87.9% on GPQA Diamond compared to Kimi K2 Thinking's 83.4%, while GPT-5.2 scores 73.3% on τ²-Bench Airline compared to Kimi K2 Thinking's 69.2%.
Context: In context, GPT-5.2 scores 400K on Context Length compared to Kimi K2 Thinking's 262K.
Pricing Comparison
GPT-5.2 costs $1.8/1M input tokens and $14.0/1M output tokens, while Kimi K2 Thinking costs $0.60/1M input and $2.5/1M output. Kimi K2 Thinking is the more affordable option for API usage.
Verdict
Kimi K2 Thinking leads across the board in affordability, making it the stronger overall choice in this comparison.
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GPT-5.2 vs Kimi K2 Thinking — FAQ
Which is better, GPT-5.2 or Kimi K2 Thinking?
GPT-5.2 wins on more benchmarks overall (5 vs 3). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5.2 compare to Kimi K2 Thinking for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is GPT-5.2 cheaper than Kimi K2 Thinking?
Yes, Kimi K2 Thinking is cheaper. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens. Kimi K2 Thinking costs $0.60/1M input and $2.5/1M output tokens.
Which is faster, GPT-5.2 or Kimi K2 Thinking?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the GPT-5.2 vs Kimi K2 Thinking comparison cover?
This comparison covers 8 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, Cached Input Cost, Design Arena ELO, τ²-Bench Airline, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.