DeepSeek V4 Pro vs GPT-5 Mini for email drafting: which is better in 2026?

A head-to-head look at DeepSeek V4 Pro 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 DeepSeek V4 Pro on the inputPricePerMTok metric. Cheap and fast enough to embed in every inbox.

Side-by-side specs

Spec	DeepSeek	GPT-5 Mini
Intelligence index	72.8	64.5
Coding index	74.5	61.0
Context window	256K tokens	200K tokens
Speed (tok/s)	120	220
Input $/M	$0.27	$0.25
Output $/M	$1.10	$1.00
Released	Mar 4, 2026	Sep 10, 2025

How they handle email drafting

DeepSeek V4 Pro: Cheapest frontier-class pricing. The main caveat is weaker english creative writing.

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:

DeepSeek V4 Pro: $1.29 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: DeepSeek V4 Pro
Fastest: GPT-5 Mini

FAQ

Is DeepSeek V4 Pro better than GPT-5 Mini for email drafting?

On May 2026 benchmarks (artificialanalysis.ai), GPT-5 Mini ranks higher than DeepSeek V4 Pro 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, DeepSeek V4 Pro or GPT-5 Mini?

DeepSeek V4 Pro costs $0.27 input and $1.10 output per million tokens. GPT-5 Mini costs $0.25 input and $1.00 output per million tokens.

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

Yes. Admix is a multi model AI chat aggregator that lets you run DeepSeek V4 Pro and GPT-5 Mini side by side under one subscription.

Sources

Benchmarks from artificialanalysis.ai (May 2026).

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