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Claude Opus vs Grok

Compare Claude Opus vs Grok: pricing, context window, benchmarks (coding, math, reasoning), capabilities. Updated April 2026.

Updated April 2026

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Claude Opus
Anthropic · Claude Opus 4.7
claude.ai ↗
Grok
xAI · Grok 4
grok.com ↗
Pricing
Free tier
Not available on free tier
Free with X account, throttled
Standard plan
Max 5× — $100/mo
SuperGrok — $30/mo
Top plan
Max 20× — $200/mo
Heavy — $300/mo
API input / 1M tokens
$15.00
$5.00 Best
API output / 1M tokens
$75.00
$15.00 Best
Capability
Context window
1M Best
256K
Max output tokens
64K Best
16K
Knowledge cutoff
2026-03
2026-02
Benchmarks
Coding (LiveCodeBench)
82% Best
68%
Math (AIME 2025)
81% Best
75%
Reasoning (GPQA Diamond)
88% Best
76%
Human pref. (LMArena Elo)
1428 Best
1378
Features
Image input
Voice mode
Partial
Partial
Web search
File upload
Image generation
Code execution
Partial
Agent / tool use
Partial
Persistent memory
Partial
Claude Opus

Frontier reasoning model. 5× the cost of Sonnet for ~5pt benchmark lift.

Grok

Real-time X data feed. Image gen via Aurora. Less guarded tone than other frontier models.

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