Claude Opus 4.8 vs Grok 4
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Opus 4.8 by Anthropic wins on 4 of 6 benchmarks against Grok 4 by xAI, which leads on 2. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Claude Opus 4.8 scores 1262 on Design Arena ELO compared to Grok 4's 1073, while Claude Opus 4.8 scores 1267 on Website Arena ELO compared to Grok 4's 1056.
Reasoning: In reasoning, Claude Opus 4.8 scores 89.6% on GPQA Diamond compared to Grok 4's 87.0%.
Context: In context, Claude Opus 4.8 scores 1.0M on Context Length compared to Grok 4's 256K.
Pricing Comparison
Claude Opus 4.8 costs $5.0/1M input tokens and $25.0/1M output tokens, while Grok 4 costs $3.0/1M input and $15.0/1M output. Grok 4 is the more affordable option for API usage.
Verdict
Grok 4 leads across the board in affordability, making it the stronger overall choice in this comparison.
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Claude Opus 4.8 vs Grok 4 — FAQ
Which is better, Claude Opus 4.8 or Grok 4?
Claude Opus 4.8 wins on more benchmarks overall (4 vs 2). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Opus 4.8 compare to Grok 4 for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Claude Opus 4.8 cheaper than Grok 4?
Yes, Grok 4 is cheaper. Claude Opus 4.8 costs $5.0/1M input and $25.0/1M output tokens. Grok 4 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, Claude Opus 4.8 or Grok 4?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Claude Opus 4.8 vs Grok 4 comparison cover?
This comparison covers 6 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, Design Arena ELO, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.