Grok 4.6 vs Claude Opus 5

Compare Grok 4.6 from SpaceXAI and Claude Opus 5 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Grok 4.6 vs Claude Opus 5: side-by-side summary

Grok 4.6 and Claude Opus 5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok 4.6, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.

Claude Opus 5, from Anthropic, has a 1,000,000-token context window and is priced at $5/M tokens input, $25/M tokens output on OpenRouter.

Context window

Grok 4.6: 500,000 tokens
Claude Opus 5: 1,000,000 tokens

Price

Grok 4.6: $2/M tokens input, $6/M tokens output
Claude Opus 5: $5/M tokens input, $25/M tokens output

Provided by

Grok 4.6: SpaceXAI
Claude Opus 5: Anthropic

Grok 4.6 vs Claude Opus 5 at a glance

Grok 4.6 vs Claude Opus 5 comparison
Attribute	Grok 4.6	Claude Opus 5
Input price	$2/M tokens	$5/M tokens
Output price	$6/M tokens	$25/M tokens
Context window	500,000 tokens	1,000,000 tokens
Intelligence Index	44.3	50.8
Coding Index	76.8	78.0
Agentic Index	53.0	56.5
Latency (p50)	2.41 s	2.97 s
Throughput (p50)	52.0 tok/s	62.0 tok/s

Benchmark data updated Oct 13, 2026

Frequently asked questions

Which has the longer context window, Grok 4.6 or Claude Opus 5?

Claude Opus 5 has the longer context window at 1,000,000 tokens, compared with 500,000 tokens for Grok 4.6.

Which is faster, Grok 4.6 or Claude Opus 5?

Claude Opus 5 is faster on OpenRouter, generating a median 62.0 tokens per second compared with 52.0 tokens per second for Grok 4.6.

Which scores higher on coding, Grok 4.6 or Claude Opus 5?

Claude Opus 5 scores higher on coding, with an Artificial Analysis Coding Index of 78.0 compared with 76.8 for Grok 4.6.

Grok 4.6 vs Claude Opus 5

Grok 4.6 vs Claude Opus 5

Overview