Grok 4 vs Qwen 3.5 397B
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Grok 4 by xAI wins on 11 of 14 benchmarks against Qwen 3.5 397B by Qwen, which leads on 3. 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 Qwen 3.5 397B's 1350, while Grok 4 scores 87.0% on MMLU-Pro compared to Qwen 3.5 397B's 81.0%.
Coding: In coding, Grok 4 scores 90.0% on HumanEval+ compared to Qwen 3.5 397B's 88.0%, while Qwen 3.5 397B scores 76.4% on SWE-bench Verified compared to Grok 4's 72.0%, while Grok 4 scores 65.0% on LiveCodeBench compared to Qwen 3.5 397B's 54.0%.
Math: In math, Grok 4 scores 91.0% on MATH compared to Qwen 3.5 397B's 87.0%, while Grok 4 scores 97.0% on GSM8K compared to Qwen 3.5 397B's 95.0%.
Reasoning: In reasoning, Grok 4 scores 87.0% on GPQA Diamond compared to Qwen 3.5 397B's 62.0%, while Grok 4 scores 50.0% on ARC-AGI compared to Qwen 3.5 397B's 45.0%.
Context: In context, Grok 4 scores 256K on Context Length compared to Qwen 3.5 397B's 131K.
Pricing Comparison
Grok 4 costs $3.0/1M input tokens and $15.0/1M output tokens, while Qwen 3.5 397B costs $0.60/1M input and $3.6/1M output. Qwen 3.5 397B is the more affordable option for API usage.
Speed Comparison
Grok 4 generates output at 55 tok/s compared to Qwen 3.5 397B's 45 tok/s, and the time to first token is 500 ms for Grok 4 versus 600 ms for Qwen 3.5 397B. Grok 4 delivers faster throughput.
Verdict
For developers prioritizing general intelligence and math and speed, Grok 4 has the edge. For those who value coding and affordability, Qwen 3.5 397B is the stronger choice.
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Grok 4 vs Qwen 3.5 397B — FAQ
Which is better, Grok 4 or Qwen 3.5 397B?
Grok 4 wins on more benchmarks overall (11 vs 3). However, the best choice depends on your specific needs — each model excels in different areas.
How does Grok 4 compare to Qwen 3.5 397B for coding?
Qwen 3.5 397B is better for coding, scoring 76.4% on SWE-bench Verified compared to 72.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Grok 4 cheaper than Qwen 3.5 397B?
Yes, Qwen 3.5 397B is cheaper. Grok 4 costs $3.0/1M input and $15.0/1M output tokens. Qwen 3.5 397B costs $0.60/1M input and $3.6/1M output tokens.
Which is faster, Grok 4 or Qwen 3.5 397B?
Grok 4 is faster, generating output at 55 tok/s compared to 45 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Grok 4 vs Qwen 3.5 397B 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.