Chat with all AIClaude Opus 5.5 vs Grok 4.7
Claude Opus 5.5 (Anthropic) and Grok 4.7 (xAI) are both in Chat with all AI's model menu. Here's how they differ in practice, which to pick for which task, and how to compare them on your own prompt in seconds.
At a glance
| Claude Opus 5.5 | Grok 4.7 | |
|---|---|---|
| Made by | Anthropic | xAI |
| Group in the menu | Hardest problems | Complex work |
| Speed | Thorough | Fast |
| Best for | Complex coding and architecture, Long documents and contracts (with human review) | Blunt feedback on ideas and drafts, Brainstorming lots of options fast |
| On Pro | 30 a day | Unlimited (fair use) |
| Separate subscription needed? | No — included | No — included |
Quick verdict
- Coding: Claude Opus 5.5 usually has the edge.
- Writing: Claude Opus 5.5 usually has the edge.
- Speed: Grok 4.7 usually has the edge.
- Hard reasoning: Claude Opus 5.5 usually has the edge.
- Brainstorming: Grok 4.7 usually has the edge.
Verdicts reflect how these models are generally positioned and reported in 2026. Your own prompts are the best test.
Where Claude Opus 5.5 shines
- Top-tier code quality and debugging
- Very careful, thorough reasoning
- Excellent long-context reading
- Clear about assumptions and risks
Where Grok 4.7 shines
- Direct answers with less hedging
- Personality and humor when you want it
- Fast iterations in long chats
- Good at generating many variations
Watch-outs
Claude Opus 5.5
- Slower — use Sonnet or Haiku for quick tasks
- Pro includes 30 requests a day on max-tier models
- Not a substitute for a lawyer, doctor or accountant
Grok 4.7
- In this extension Grok has no access to X or live search
- Direct style may need softening for formal writing
- Check sensitive facts with a second model
Prompts to test both
Send a prompt with one model, then switch the model and press Regenerate. Each answer is labelled with the model that wrote it.
Bottom line
Choose Claude Opus 5.5 for complex coding and architecture and long documents and contracts (with human review). Choose Grok 4.7 for blunt feedback on ideas and drafts and brainstorming lots of options fast. They come from different labs, so using both is a great way to catch mistakes.
Frequently asked questions
Is Claude Opus 5.5 better than Grok 4.7?
It depends on the task. Claude Opus 5.5 is strongest at complex coding and architecture; Grok 4.7 shines at blunt feedback on ideas and drafts. The quickest way to know is to ask both the same question — in Chat with all AI that's one model switch.
Which is faster, Claude Opus 5.5 or Grok 4.7?
In practice Claude Opus 5.5 is thorough and Grok 4.7 is fast. Real speed also depends on answer length and load.
Can I use Claude Opus 5.5 and Grok 4.7 with one subscription?
Yes. Both are in Chat with all AI. Try them with 3 free requests; Pro covers both.
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