# Best Internet Providers in San Francisco, CA (2026)
San Francisco has a strong broadband market anchored by [Xfinity](/providers/xfinity), [AT&T Fiber](/providers/att), and local favorite Sonic. As a dense urban environment with older building stock, availability can vary significantly by address and building type.
Top Internet Providers in San Francisco
### 1. AT&T Fiber AT&T Fiber has expanded broadly across San Francisco, offering symmetrical gigabit speeds. It's the top choice for most SF residents where building access permits installation.
**Speeds:** 300 Mbps – 5 Gbps (symmetrical) **Starting price:** ~$55/mo **Type:** Fiber optic (FTTH) **Best for:** Most SF households; excellent reliability and no data caps
### 2. Xfinity (Comcast) Xfinity covers most of San Francisco with its cable network, providing fast download speeds and the widest availability. Popular in buildings where AT&T Fiber hasn't been wired.
**Speeds:** 75 Mbps – 1,200 Mbps **Starting price:** ~$35/mo (introductory) **Type:** Cable (coaxial) **Best for:** Areas without fiber; broad building compatibility
### 3. Sonic Sonic is a Bay Area regional ISP with a strong following in San Francisco for its customer service, no-contract terms, and fiber deployments. Sonic uses AT&T's fiber infrastructure in some areas while deploying its own in others.
**Speeds:** 100 Mbps – 1 Gbps **Starting price:** ~$40/mo **Type:** Fiber / DSL hybrid **Best for:** SF residents who value customer service and local support
### 4. T-Mobile Home Internet [T-Mobile Home Internet](/providers/t-mobile)'s 5G coverage in SF is solid, making home internet a viable option — especially in older buildings where running new cable is difficult.
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Check My Address**Speeds:** 100–400 Mbps (variable) **Starting price:** ~$50/mo **Type:** Fixed wireless (5G) **Best for:** Apartments in older buildings; moderate users
### 5. Monkeybrains Monkeybrains is a local San Francisco fixed wireless ISP known for excellent customer service and competitive pricing in the neighborhoods it serves (primarily eastern SF).
**Speeds:** 50 Mbps – 1 Gbps **Starting price:** ~$35/mo **Type:** Fixed wireless (rooftop antenna) **Best for:** Buildings in eastern SF neighborhoods where Monkeybrains has rooftop access
San Francisco by Neighborhood
- **SoMa, Mission, Castro, Noe Valley:** AT&T Fiber and Xfinity competitive; Monkeybrains strong in SoMa/Mission - **Richmond, Sunset:** Xfinity and AT&T Fiber; some Sonic coverage - **Marina, Pac Heights, Russian Hill:** AT&T Fiber and Xfinity both well-served - **Bayview, Visitacion Valley:** Xfinity primary; AT&T Fiber expanding - **Tenderloin, Civic Center:** Xfinity and AT&T; digital equity programs active
The SF Building Challenge
San Francisco's Victorian and Edwardian building stock creates unique internet challenges: - Many buildings have restrictive wiring policies - Conduit access for fiber installation is limited in older buildings - Landlord permission is often required for new cable runs - Monkeybrains' rooftop wireless model was specifically designed for SF's older housing
Low-Income Programs in San Francisco
- **SF Connected**: City program providing free or low-cost internet to qualifying residents - **Xfinity Internet Essentials**: $10–$30/mo - **AT&T Access**: $30/mo for SNAP recipients - **Digital Equity Fund**: SF Department of Technology manages local programs
Frequently Asked Questions
**What is Sonic internet and is it good in SF?** Sonic is a Bay Area ISP with an excellent reputation for customer service and fair pricing. It's a strong option where available and is preferred by many SF residents over Xfinity.
**Does Xfinity have data caps in San Francisco?** Yes — 1.2 TB/month. AT&T Fiber has no data caps.
**Is AT&T Fiber available in my SF apartment?** Coverage depends on building access. Even in served areas, older buildings may not have fiber wired. Check [FiberFinder](https://fiberfinder.ai) and verify with your landlord.
**What is Monkeybrains and how does it work?** Monkeybrains is a local wireless ISP that installs a small antenna on your rooftop to connect to their network. It serves much of eastern San Francisco with fast, reliable service and is well-regarded locally.
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Check what's available at your SF address at [fiberfinder.ai](https://fiberfinder.ai) — results include building-level availability where data is available.