Grok 3 vs Grok 4
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Grok 4 by xAI wins on 8 of 15 benchmarks against Grok 3 by xAI, which leads on 5. 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 3's 1402, while Grok 4 scores 87.0% on MMLU-Pro compared to Grok 3's 74.0%.
Coding: In coding, Grok 4 scores 90.0% on HumanEval+ compared to Grok 3's 82.0%, while Grok 4 scores 72.0% on SWE-bench Verified compared to Grok 3's 42.0%, while Grok 3 scores 79.4% on LiveCodeBench compared to Grok 4's 65.0%.
Math: In math, Grok 4 scores 91.0% on MATH compared to Grok 3's 82.0%, while Grok 4 scores 97.0% on GSM8K compared to Grok 3's 93.0%, while Grok 3 scores 93.3% on AIME 2025 compared to Grok 4's 93.0%.
Reasoning: In reasoning, Grok 4 scores 87.0% on GPQA Diamond compared to Grok 3's 84.6%, while Grok 4 scores 50.0% on ARC-AGI compared to Grok 3's 28.0%.
Context: In context, Grok 3 scores 1.0M on Context Length compared to Grok 4's 256K.
Pricing Comparison
Grok 3 costs $3.0/1M input tokens and $15.0/1M output tokens, while Grok 4 costs $3.0/1M input and $15.0/1M output. Both models are priced identically for input tokens.
Speed Comparison
Grok 3 generates output at 65 tok/s compared to Grok 4's 55 tok/s, and the time to first token is 400 ms for Grok 3 versus 500 ms for Grok 4. Grok 3 delivers faster throughput.
Verdict
For developers prioritizing speed, Grok 3 has the edge. For those who value coding and general intelligence and math, Grok 4 is the stronger choice.
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Grok 3 vs Grok 4 — FAQ
Which is better, Grok 3 or Grok 4?
Grok 4 wins on more benchmarks overall (8 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does Grok 3 compare to Grok 4 for coding?
Grok 4 is better for coding, scoring 72.0% on SWE-bench Verified compared to 42.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Grok 3 cheaper than Grok 4?
Both models are priced the same at $3.0/1M input tokens. Grok 3 output costs $15.0/1M and Grok 4 output costs $15.0/1M.
Which is faster, Grok 3 or Grok 4?
Grok 3 is faster, generating output at 65 tok/s compared to 55 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Grok 3 vs Grok 4 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.