✓ Quartzite
A unified chat interface for accessing GPT, Claude, Gemini, and other AI models using your own API key.
Why we recommend them
Quartzite is a bring-your-own-API-key chat interface that gives access to multiple AI models (GPT-5.1, Opus 4.5, Gemini 3, o3-pro, DeepSeek, Perplexity, and more) in one app. It's aimed at users who want advanced prompting tools—like a Markdown editor, version history, templates, and cost previews—for research, writing, or complex tasks, without paying for multiple separate subscriptions.
✓Requires your own API key; you pay model providers directly for usage instead of a flat subscription
✓Early Supporter Plan priced at $3.99/month (locked in), discounted from $7.99
✓Includes prompt version history, cost preview, template library, and an AI-powered prompt optimizer
What we actually verified
5.6/10 TrustScore—Money-back guarantee verified
—Free trial available
✓Reachable customer service[email protected]
✓No fine-print return conditions
✓No unrealistic claims detected
Vetted 2026-07-13 · How we vet →
Straight referral — we earn nothing from this link.
Common questions about Quartzite
Is Quartzite legit and safe to buy from?
Yes — Quartzite passed the WhatiseBrokering.com vetting checklist (a real way to reach them, realistic claims only) before being listed. We remove companies that stop meeting the standard.
Can I try Quartzite before committing, or get my money back?
We couldn't verify a published free trial or money-back policy for Quartzite during automated vetting, so check their pricing or returns page before you buy. What we did verify: reachable customer service and realistic claims. If your experience doesn't match, report it below and we'll re-review the listing.
How do I reach Quartzite if something goes wrong?
Quartzite publishes a real customer-service contact (phone or email) — that's a listing requirement. During vetting we found [email protected] published on their site. If you can't get a response, tell us at [email protected] and we'll review their listing.
Why is Quartzite listed on WhatiseBrokering.com?
We discovered and vetted Quartzite ourselves. They don't pay us anything — they're listed purely because they meet the standard.
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