Grok 4 vs GPT-5 Mini for customer support: which is better in 2026?
A head-to-head look at Grok 4 and GPT-5 Mini for customer support. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For customer support in May 2026, GPT-5 Mini edges out Grok 4 on the speedTokPerSec metric. Excellent quality-to-price ratio.
Side-by-side specs
| Spec | Grok | GPT-5 Mini |
|---|---|---|
| Intelligence index | 73.9 | 64.5 |
| Coding index | 70.2 | 61.0 |
| Context window | 256K tokens | 200K tokens |
| Speed (tok/s) | 198 | 220 |
| Input $/M | $3.00 | $0.25 |
| Output $/M | $15.00 | $1.00 |
| Released | Jan 22, 2026 | Sep 10, 2025 |
How they handle customer support
Grok 4: Snappy responses with web grounding for live answers.
GPT-5 Mini: Excellent quality-to-price ratio. The main caveat is behind flagships on hard reasoning.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- Grok 4: $16.50 per 1,000 queries
- GPT-5 Mini: $1.18 per 1,000 queries
Verdict by sub-task
- Best raw quality on customer support:
- Best price: GPT-5 Mini
- Longest context: Grok 4
- Fastest: GPT-5 Mini
FAQ
Is Grok 4 better than GPT-5 Mini for customer support?
On May 2026 benchmarks (artificialanalysis.ai), GPT-5 Mini ranks higher than Grok 4 for customer support on the speedTokPerSec metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, Grok 4 or GPT-5 Mini?
Grok 4 costs $3.00 input and $15.00 output per million tokens. GPT-5 Mini costs $0.25 input and $1.00 output per million tokens.
Can I use both Grok and GPT-5 Mini in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run Grok 4 and GPT-5 Mini side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
Related
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