5,000,000 users · Honest comparison
Sephir vs Sider.
AI sidebar built on a proprietary credit pool with daily caps. ~5M weekly users. Below: what Sider users actually say, and how Sephir is built around the opposite incentives.
From Sider’s Chrome Web Store reviews
What real users actually said.
- “'No free version' — deceptive advertising in the listing.”
- “Daily / monthly limits hit fast, then you pay again for tokens you already pay your provider for.”
- “Sign-in required just to test the basics; auto-renew charges trigger refund disputes.”
- “Their own AI traffic gets prioritised over the OpenAI/Anthropic key you bring.”
How Sephir is different
Built around the opposite incentives.
- 01Free tier is really free — BYOK is the default, not a buried Pro feature.
- 02Nothing to re-bill — your provider tokens flow direct, Sephir never sits between you and them.
- 03Lifetime price ladder ($39 → $79 → $99) locks in what you pay today, forever.
- 04Refund button on the account page via Polar — no support thread to negotiate.
Try it free
The agent layer for the browser, without the auto-renew.
Free tier covers BYOK + single-turn chat. Pro Lifetime unlocks the agent loop, $39 for the first 500 buyers, one-time payment.