Sonic California — Independent Fiber + $50/mo for 10 Gbps Symmetric (Yes, Really)
Sonic — Santa Rosa CA based, founded 1994 — has been delivering independent symmetric fiber across California for 30+ years. They run their own fiber network, lease access to AT&T fiber where they don't have their own, and offer the most aggressive pricing of any US ISP: $49.99/mo for 10 Gbps symmetric, all-in. No contracts, no data caps, equipment included, $0 install. The pricing sounds like a typo. It isn't. Sonic is the price-leader of US fiber by a wide margin.
The short version
- Who: Sonic — California's largest independent fiber operator.
- Footprint: Bay Area (San Francisco, Oakland, Berkeley, San Jose), LA, Sacramento, Santa Rosa, Sebastopol, 90+ NorCal communities. Expanding annually.
- Tech: Symmetric XGS-PON fiber in their own footprint; AT&T fiber resale in adjacent ZIPs.
- Pricing: $49.99/mo for 10 Gbps symmetric. One tier. Flat. Forever.
- Contract: None. No data caps. $0 install.
- Customer service: Independent operator, known for actually picking up the phone.
- Recommendation: 🟢 GREEN. If Sonic is at your CA address, sign up. There's no reason to pay another provider.
Sonic pricing — verified May 2026
Verified at sonic.com.
| Tier | Speed (down/up) | Monthly | Notes |
|---|---|---|---|
| Sonic Fiber | 10,000 / 10,000 Mbps | $49.99/mo | Symmetric 10 Gig — equipment + install included |
| Sonic Fusion (AT&T resale) | Up to 1,000 / 1,000 Mbps | $50-65/mo | Where Sonic doesn't own the fiber yet |
| Sonic + landline phone | Same fiber + 1 line | $54.99/mo total | Add phone if you still want a landline |
That's the entire price list. Sonic doesn't believe in tiers. The fiber can do 10 Gig — so 10 Gig is what they sell. One number.
How Sonic compares to California incumbents
| Provider | 1 Gbps plan | Upload | Contract | Data cap | Equipment | Price after Y1 |
|---|---|---|---|---|---|---|
| Sonic Fiber | $49.99/mo (10 Gig) | 10,000 Mbps symmetric | No | No | Included | $49.99 (flat) |
| AT&T Fiber | $80 | 1,000 Mbps symmetric | No | No | $10/mo gateway | $90 |
| Xfinity | $80 promo / $115 retail | 35 Mbps | Promo Y2 jump | 1.2 TB | $15/mo | $130/mo |
| Spectrum (SoCal) | $80 promo / $115 retail | 35 Mbps | None advertised | No | $5/mo modem (auto) | $120/mo |
| Google Fiber (SF/LA) | $70 | 1,000 Mbps symmetric | No | No | Included | $70 (flat) |
The honest read: Sonic at $49.99 for 10 Gig is cheaper than every US ISP for the slowest fiber gig tier. It's not close. Sonic is the cheapest fiber in America by a significant margin, AND they give you 10x the bandwidth of competitors at the same tier. If Sonic is at your address, every other ISP is irrelevant.
Why Sonic can charge $49.99 when everyone else charges $80+
- They own the fiber where they can — no monopoly rent to a parent company.
- They built smart — fiber rings + dense aerial deployment in their core Bay Area + NorCal markets, low overhead per subscriber.
- They don't have a Wall Street earnings call — Sonic is privately held + independent, no quarterly margin pressure.
- They run a tight operation — ~150 employees serving ~100,000+ customers.
- They prioritize customer retention over upsells — when your only price is $50, there's no churn from "promo expired" surprises.
Rick's installer take
Sonic is one of the few US ISPs I'd actively switch TO if they were at my address. The combination of $50/mo, 10 Gig symmetric, no contracts, no data caps, and "we pick up the phone" customer service doesn't exist anywhere else at this scale. If you live in NorCal or LA and have Sonic at your address, sign up today. If you don't have Sonic but live in CA, check periodically — they're expanding annually.
The catch — Sonic's fiber footprint is still expanding
Sonic's own fiber covers ~90 NorCal communities + parts of LA. Outside that, they resell AT&T fiber as "Sonic Fusion" — same customer service, but capped at 1 Gig and using AT&T's network. If you're in a Sonic-Fusion ZIP, you're getting Sonic-style support over AT&T fiber — still a major upgrade vs AT&T direct, but not the magic $50-for-10-Gig deal.
How to check your address
- Visit sonic.com/find-availability.
- If you're in scope — sign up. Don't overthink this.
- Cross-reference with our Coverage Grid if you want to see alternatives.