GPT-5.2 vs Grok 3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 14 of 15 benchmarks against Grok 3 by xAI, which leads on 1. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from the AI Value Index.
Category-by-Category Breakdown
General Intelligence: In general intelligence, GPT-5.2 scores 1475 on Chatbot Arena ELO compared to Grok 3's 1402, while GPT-5.2 scores 83.0% on MMLU-Pro compared to Grok 3's 74.0%.
Coding: In coding, GPT-5.2 scores 95.0% on HumanEval+ compared to Grok 3's 82.0%, while GPT-5.2 scores 80.0% on SWE-bench Verified compared to Grok 3's 42.0%, while GPT-5.2 scores 80.0% on LiveCodeBench compared to Grok 3's 79.4%.
Math: In math, GPT-5.2 scores 97.0% on MATH compared to Grok 3's 82.0%, while GPT-5.2 scores 99.0% on GSM8K compared to Grok 3's 93.0%, while GPT-5.2 scores 100.0% on AIME 2025 compared to Grok 3's 93.3%.
Reasoning: In reasoning, GPT-5.2 scores 92.4% on GPQA Diamond compared to Grok 3's 84.6%, while GPT-5.2 scores 54.2% on ARC-AGI compared to Grok 3's 28.0%.
Context: In context, Grok 3 scores 1.0M on Context Length compared to GPT-5.2's 400K.
Pricing Comparison
GPT-5.2 costs $1.8/1M input tokens and $14.0/1M output tokens, while Grok 3 costs $3.0/1M input and $15.0/1M output. GPT-5.2 is the more affordable option for API usage.
Speed Comparison
GPT-5.2 generates output at 90 tok/s compared to Grok 3's 65 tok/s, and the time to first token is 380 ms for GPT-5.2 versus 400 ms for Grok 3. GPT-5.2 delivers faster throughput.
Verdict
GPT-5.2 leads across the board in coding, general intelligence, math, affordability, speed, making it the stronger overall choice in this comparison.
View Individual Model Pages
GPT-5.2 vs Grok 3 — FAQ
Which is better, GPT-5.2 or Grok 3?
GPT-5.2 wins on more benchmarks overall (14 vs 1). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5.2 compare to Grok 3 for coding?
GPT-5.2 is better for coding, scoring 80.0% on SWE-bench Verified compared to 42.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is GPT-5.2 cheaper than Grok 3?
Yes, GPT-5.2 is cheaper. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens. Grok 3 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, GPT-5.2 or Grok 3?
GPT-5.2 is faster, generating output at 90 tok/s compared to 65 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the GPT-5.2 vs Grok 3 comparison cover?
This comparison covers 15 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, Time to First Token, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.