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Claude Opus 4.8 vs Grok 4

Grok 4 leads in 3 of 8 categories

Arena ELO

Grok 4

Cheaper

Tie

Faster

Grok 4

Detailed Comparison

CategoryClaude Opus 4.8Grok 4
ProviderAnthropic xAI
Context Window200K 256K WIN
Input Price ($/1M)$5 $5
Output Price ($/1M)$25 $25
Arena ELON/A 1330 WIN
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~45 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.8 or Grok 4?

Grok 4 is approximately 0% cheaper than Claude Opus 4.8 per million tokens.

Which is better for coding, Claude Opus 4.8 or Grok 4?

Claude Opus 4.8 scores N/A on coding benchmarks, while Grok 4 scores unknown.

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while Grok 4 supports 256K.

Is Claude Opus 4.8 or Grok 4 open source?

Claude Opus 4.8 is proprietary. Grok 4 is proprietary.

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