Claude Opus 4 vs Grok 3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Opus 4 by Anthropic and Grok 3 by xAI are evenly matched across 16 benchmarks. 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, Grok 3 scores 1402 on Chatbot Arena ELO compared to Claude Opus 4's 1375, while Claude Opus 4 scores 83.0% on MMLU-Pro compared to Grok 3's 74.0%.
Coding: In coding, Claude Opus 4 scores 90.0% on HumanEval+ compared to Grok 3's 82.0%, while Claude Opus 4 scores 72.5% on SWE-bench Verified compared to Grok 3's 42.0%, while Grok 3 scores 79.4% on LiveCodeBench compared to Claude Opus 4's 60.0%, while Claude Opus 4 scores 1171 on Design Arena ELO compared to Grok 3's 1089, while Claude Opus 4 scores 1177 on Website Arena ELO compared to Grok 3's 1101.
Math: In math, Claude Opus 4 scores 86.0% on MATH compared to Grok 3's 82.0%, while Claude Opus 4 scores 95.0% on GSM8K compared to Grok 3's 93.0%.
Reasoning: In reasoning, Grok 3 scores 84.6% on GPQA Diamond compared to Claude Opus 4's 79.6%, while Claude Opus 4 scores 45.0% on ARC-AGI compared to Grok 3's 28.0%.
Context: In context, Grok 3 scores 1.0M on Context Length compared to Claude Opus 4's 200K.
Pricing Comparison
Claude Opus 4 costs $15.0/1M input tokens and $75.0/1M output tokens, while Grok 3 costs $3.0/1M input and $15.0/1M output. Grok 3 is the more affordable option for API usage.
Speed Comparison
Claude Opus 4 generates output at 50 tok/s compared to Grok 3's 65 tok/s, and the time to first token is 550 ms for Claude Opus 4 versus 400 ms for Grok 3. Grok 3 delivers faster throughput.
Verdict
For developers prioritizing coding and math, Claude Opus 4 has the edge. For those who value general intelligence and affordability and speed, Grok 3 is the stronger choice.
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Claude Opus 4 vs Grok 3 — FAQ
Which is better, Claude Opus 4 or Grok 3?
Claude Opus 4 and Grok 3 are evenly matched across benchmarks. The best choice depends on your specific priorities such as coding ability, speed, or pricing.
How does Claude Opus 4 compare to Grok 3 for coding?
Claude Opus 4 is better for coding, scoring 72.5% on SWE-bench Verified compared to 42.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Opus 4 cheaper than Grok 3?
Yes, Grok 3 is cheaper. Claude Opus 4 costs $15.0/1M input and $75.0/1M output tokens. Grok 3 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, Claude Opus 4 or Grok 3?
Grok 3 is faster, generating output at 65 tok/s compared to 50 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Opus 4 vs Grok 3 comparison cover?
This comparison covers 16 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.