Claude Opus 4.7 vs GPT-5 Mini for email drafting: which is better in 2026?

A head-to-head look at Claude Opus 4.7 and GPT-5 Mini 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, GPT-5 Mini edges out Claude Opus 4.7 on the inputPricePerMTok metric. Cheap and fast enough to embed in every inbox.

Side-by-side specs

Spec	Claude	GPT-5 Mini
Intelligence index	76.9	64.5
Coding index	82.3	61.0
Context window	1M tokens	200K tokens
Speed (tok/s)	88	220
Input $/M	$15.00	$0.25
Output $/M	$75.00	$1.00
Released	Apr 23, 2026	Sep 10, 2025

How they handle email drafting

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

GPT-5 Mini: Cheap and fast enough to embed in every inbox.

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
GPT-5 Mini: $1.18 per 1,000 queries

Verdict by sub-task

Best raw quality on email drafting:
Best price: GPT-5 Mini
Longest context: Claude Opus 4.7
Fastest: GPT-5 Mini

FAQ

Is Claude Opus 4.7 better than GPT-5 Mini for email drafting?

On May 2026 benchmarks (artificialanalysis.ai), GPT-5 Mini 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 GPT-5 Mini?

Claude Opus 4.7 costs $15.00 input and $75.00 output per million tokens. GPT-5 Mini costs $0.25 input and $1.00 output per million tokens.

Can I use both Claude and GPT-5 Mini in one app?

Yes. Admix is a multi model AI chat aggregator that lets you run Claude Opus 4.7 and GPT-5 Mini side by side under one subscription.

Sources

Benchmarks from artificialanalysis.ai (May 2026).

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