← All Models

Claude Opus 4.5 vs Grok 3

Grok 3 leads in 3 of 8 categories

Arena ELO

Claude Opus 4.5

Cheaper

Grok 3

Faster

Grok 3

Detailed Comparison

CategoryClaude Opus 4.5Grok 3
ProviderAnthropic xAI
Context Window200K WIN131K
Input Price ($/1M)$5 $3 WIN
Output Price ($/1M)$25 $15 WIN
Arena ELO1380 WIN1325
Coding80.9% SWE-bench unknown
Reasoningunknown 93.3% AIME 2025
Speed (tokens/sec)~35 t/s ~55 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.5 or Grok 3?

Grok 3 is approximately 40% cheaper than Claude Opus 4.5 per million tokens.

Which is better for coding, Claude Opus 4.5 or Grok 3?

Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while Grok 3 scores unknown.

Which has a larger context window?

Claude Opus 4.5 supports 200K context, while Grok 3 supports 131K.

Is Claude Opus 4.5 or Grok 3 open source?

Claude Opus 4.5 is proprietary. Grok 3 is proprietary.

Which ranks higher on the Chatbot Arena leaderboard?

Claude Opus 4.5 ranks higher with ELO 1380 vs 1325.