Claude Opus 4.7 vs Grok 4 for email drafting: which is better in 2026?

A head-to-head look at Claude Opus 4.7 and Grok 4 for email drafting. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.

Quick verdict

For email drafting in May 2026, Grok 4 edges out Claude Opus 4.7 on the inputPricePerMTok metric. Fastest tokens per second among flagships.

Side-by-side specs

Spec	Claude	Grok
Intelligence index	76.9	73.9
Coding index	82.3	70.2
Context window	1M tokens	256K tokens
Speed (tok/s)	88	198
Input $/M	$15.00	$3.00
Output $/M	$75.00	$15.00
Released	Apr 23, 2026	Jan 22, 2026

How they handle email drafting

Claude Opus 4.7: Best-in-class agentic coding. The main caveat is premium pricing on output tokens.

Grok 4: Fastest tokens per second among flagships. The main caveat is behind on coding benchmarks.

Cost per 1,000 queries

Assuming 1,500 input and 800 output tokens per query:

Claude Opus 4.7: $82.50 per 1,000 queries
Grok 4: $16.50 per 1,000 queries

Verdict by sub-task

Best raw quality on email drafting:
Best price: Grok 4
Longest context: Claude Opus 4.7
Fastest: Grok 4

FAQ

Is Claude Opus 4.7 better than Grok 4 for email drafting?

On May 2026 benchmarks (artificialanalysis.ai), Grok 4 ranks higher than Claude Opus 4.7 for email drafting on the inputPricePerMTok metric. The gap is small enough that the choice often comes down to price, context length, and tone.

Which is cheaper, Claude Opus 4.7 or Grok 4?

Claude Opus 4.7 costs $15.00 input and $75.00 output per million tokens. Grok 4 costs $3.00 input and $15.00 output per million tokens.

Can I use both Claude and Grok in one app?

Yes. Admix is a multi model AI chat aggregator that lets you run Claude Opus 4.7 and Grok 4 side by side under one subscription.

Sources

Benchmarks from artificialanalysis.ai (May 2026).

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