GPT-5 vs Grok 2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5 by OpenAI wins on 13 of 14 benchmarks against Grok 2 by xAI, which leads on 0. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, GPT-5 scores 1390 on Chatbot Arena ELO compared to Grok 2's 1250, while GPT-5 scores 86.0% on MMLU-Pro compared to Grok 2's 68.0%.
Coding: In coding, GPT-5 scores 92.0% on HumanEval+ compared to Grok 2's 78.0%, while GPT-5 scores 74.9% on SWE-bench Verified compared to Grok 2's 28.0%, while GPT-5 scores 78.0% on LiveCodeBench compared to Grok 2's 32.0%.
Math: In math, GPT-5 scores 94.6% on MATH compared to Grok 2's 70.0%, while GPT-5 scores 98.0% on GSM8K compared to Grok 2's 88.0%.
Reasoning: In reasoning, GPT-5 scores 87.3% on GPQA Diamond compared to Grok 2's 45.0%, while GPT-5 scores 50.0% on ARC-AGI compared to Grok 2's 15.0%.
Context: In context, GPT-5 scores 400K on Context Length compared to Grok 2's 131K.
Pricing Comparison
GPT-5 costs $1.3/1M input tokens and $10.0/1M output tokens, while Grok 2 costs $2.0/1M input and $10.0/1M output. GPT-5 is the more affordable option for API usage.
Speed Comparison
GPT-5 generates output at 100 tok/s compared to Grok 2's 80 tok/s, and the time to first token is 320 ms for GPT-5 versus 350 ms for Grok 2. GPT-5 delivers faster throughput.
Verdict
GPT-5 leads across the board in coding, general intelligence, math, affordability, speed, making it the stronger overall choice in this comparison.
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GPT-5 vs Grok 2 — FAQ
Which is better, GPT-5 or Grok 2?
GPT-5 wins on more benchmarks overall (13 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5 compare to Grok 2 for coding?
GPT-5 is better for coding, scoring 74.9% on SWE-bench Verified compared to 28.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is GPT-5 cheaper than Grok 2?
Yes, GPT-5 is cheaper. GPT-5 costs $1.3/1M input and $10.0/1M output tokens. Grok 2 costs $2.0/1M input and $10.0/1M output tokens.
Which is faster, GPT-5 or Grok 2?
GPT-5 is faster, generating output at 100 tok/s compared to 80 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the GPT-5 vs Grok 2 comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.