Grok 2 vs Grok 4
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Grok 4 by xAI wins on 10 of 14 benchmarks against Grok 2 by xAI, which leads on 4. 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, Grok 4 scores 1430 on Chatbot Arena ELO compared to Grok 2's 1250, while Grok 4 scores 87.0% on MMLU-Pro compared to Grok 2's 68.0%.
Coding: In coding, Grok 4 scores 90.0% on HumanEval+ compared to Grok 2's 78.0%, while Grok 4 scores 72.0% on SWE-bench Verified compared to Grok 2's 28.0%, while Grok 4 scores 65.0% on LiveCodeBench compared to Grok 2's 32.0%.
Math: In math, Grok 4 scores 91.0% on MATH compared to Grok 2's 70.0%, while Grok 4 scores 97.0% on GSM8K compared to Grok 2's 88.0%.
Reasoning: In reasoning, Grok 4 scores 87.0% on GPQA Diamond compared to Grok 2's 45.0%, while Grok 4 scores 50.0% on ARC-AGI compared to Grok 2's 15.0%.
Context: In context, Grok 4 scores 256K on Context Length compared to Grok 2's 131K.
Pricing Comparison
Grok 2 costs $2.0/1M input tokens and $10.0/1M output tokens, while Grok 4 costs $3.0/1M input and $15.0/1M output. Grok 2 is the more affordable option for API usage.
Speed Comparison
Grok 2 generates output at 80 tok/s compared to Grok 4's 55 tok/s, and the time to first token is 350 ms for Grok 2 versus 500 ms for Grok 4. Grok 2 delivers faster throughput.
Verdict
For developers prioritizing affordability and speed, Grok 2 has the edge. For those who value coding and general intelligence and math, Grok 4 is the stronger choice.
View Individual Model Pages
Grok 2 vs Grok 4 — FAQ
Which is better, Grok 2 or Grok 4?
Grok 4 wins on more benchmarks overall (10 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Grok 2 compare to Grok 4 for coding?
Grok 4 is better for coding, scoring 72.0% on SWE-bench Verified compared to 28.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Grok 2 cheaper than Grok 4?
Yes, Grok 2 is cheaper. Grok 2 costs $2.0/1M input and $10.0/1M output tokens. Grok 4 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, Grok 2 or Grok 4?
Grok 2 is faster, generating output at 80 tok/s compared to 55 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Grok 2 vs Grok 4 comparison cover?
This comparison covers 14 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.