San Antonio has two large fiber builders, and for a growing number of Bexar County streets both are available. AT&T Fiber has the wider footprint: its FCC filings cover close to two in three serviceable locations in the county. Google Fiber reaches fewer, a little under four in ten. Unlike most internet comparisons, this one isn't fiber against cable or a promotional price against a regular one. Both companies sell symmetrical fiber, both skip annual contracts, both advertise unlimited data, and both charge the same price in month thirty as in month one. That leaves three real differences: which network reaches your address, where each company's tiers start, and how high each one goes. AT&T starts lower, with entry plans priced below anything Google Fiber sells. Google Fiber charges less at the gigabit level and offers multi-gig tiers above AT&T's top plan in our data. This page works through those differences so a San Antonio household can match the network to how it actually uses the internet.
The short version
If only one fiber network reaches your San Antonio address, take that one; both are good products and neither has a pricing trap. If both reach it, the choice comes down to how much speed you want. Households that would be happy below a gigabit should look first at AT&T Fiber, whose entry tiers cost less than any Google Fiber plan. Households that want a full gigabit get it for less from Google Fiber, and anyone who wants multi-gig speeds for a large home, heavy uploads, or a home office will find those only on Google Fiber among the plans we track here. Because both prices are flat and neither company requires a contract, the decision is low-risk and easy to revisit.
Cheapest intro: AT&T Fiber · Cheapest after promo: AT&T Fiber · Fastest download: Google Fiber · Fastest upload: Google Fiber
Plans side by side
| Provider | Plan | Down / Up | Intro price | After promo | Contract | Data cap |
|---|---|---|---|---|---|---|
| Google Fiber | 1 Gig | 1000 / 1000 Mbps | $70/mo | $70/mo | None | Unlimited |
| Google Fiber | 2 Gig | 2000 / 1000 Mbps | $100/mo | $100/mo | None | Unlimited |
| Google Fiber | 5 Gig | 5000 / 5000 Mbps | $125/mo | $125/mo | None | Unlimited |
| AT&T Fiber | Fiber 300 | 300 / 300 Mbps | $55/mo | $55/mo | None | Unlimited |
| AT&T Fiber | Fiber 500 | 500 / 500 Mbps | $65/mo | $65/mo | None | Unlimited |
| AT&T Fiber | Fiber 1 Gig | 1000 / 1000 Mbps | $80/mo | $80/mo | None | Unlimited |
Prices as encoded on our provider pages, last reviewed 2026-09-29. "Not published" means the provider does not publish a standard post-promo rate — expect the promotional price to rise. Coverage shown is modeled; verify the providers available at your exact address before ordering.
Which should you choose?
Choose Google Fiber if…
- Its gigabit plan costs less than AT&T Fiber's gigabit plan, at a flat price.
- It offers multi-gig tiers above AT&T's top plan in our data, with symmetrical uploads on its fastest tier.
- Installation is free and there is no equipment rental fee.
Choose AT&T Fiber if…
- Its FCC-filed fiber reaches close to two in three Bexar County locations, well beyond Google Fiber's footprint.
- Its entry tiers cost less than Google Fiber's cheapest plan, and every tier is symmetrical.
- Pricing is flat with no annual contract and no data cap.
Reach first: which network is on your street
AT&T has the broader fiber build in San Antonio: its filings with the FCC show fiber at close to two-thirds of serviceable locations in Bexar County. Google Fiber builds its own network neighborhood by neighborhood, and its filings cover a little under four in ten locations today. Spectrum's cable remains the most widely available wired option, reaching about nine in ten.
Because the two fiber footprints overlap only in part, many San Antonio homes will find just one of these companies at their address, and some will find neither. County percentages describe the whole of Bexar County, not your block, so the reliable test is entering your exact address on each provider's site. If both say yes, the rest of this page applies.
Where each company's tiers start and stop
The two plan ladders barely overlap. AT&T Fiber begins with two sub-gigabit tiers that cost less than anything Google Fiber sells, then tops out at a gigabit in the plans we track. Google Fiber skips the lower rungs entirely: its cheapest plan is already a full gigabit, priced below AT&T's gigabit tier, and its ladder continues up to multi-gig speeds.
That shape makes the decision unusually mechanical. If a gigabit is more than your household needs, an AT&T entry tier gives you symmetrical fiber for the lowest monthly bill on either network. If you want a gigabit, Google Fiber is the cheaper way to get one. If you want more than a gigabit, Google Fiber is the only option of the two in our data. Note that Google Fiber's middle multi-gig tier pairs faster downloads with gigabit uploads, while its 1 Gig and top tiers are fully symmetrical, which the plan table above shows line by line.
What stays the same on both
Some differences that matter in other comparisons don't apply here. Neither company uses a twelve-month promotional rate that jumps later, so there is no year-two surprise to budget for. Neither imposes a data allowance, so heavy streaming households don't need to track usage. Neither requires an annual contract, so switching is a matter of scheduling an install. And because both are fiber, latency is low on either one, which is good news for gamers and video callers alike.
Frequently asked questions
- Is Google Fiber or AT&T Fiber more widely available in San Antonio?
- AT&T Fiber. Its FCC filings cover close to two in three serviceable locations in Bexar County, while Google Fiber reports a little under four in ten. Many addresses can get only one of the two, so check your exact address with both before comparing plans.
- Which is cheaper in San Antonio, Google Fiber or AT&T Fiber?
- It depends on the speed. AT&T Fiber's entry tiers cost less than any Google Fiber plan, but at the gigabit level Google Fiber's flat price is lower than AT&T's. Both prices are flat, so the comparison holds after the first year as well.
- Does either company offer multi-gig internet in San Antonio?
- Among the plans we track, only Google Fiber does, with tiers above a gigabit including a fully symmetrical top tier. AT&T Fiber's plans in our data top out at a gigabit, which is plenty for most households but not for the heaviest home-office or upload use.
Bottom line
Both the numbers above and the trade-offs are only as useful as what's actually available at your address — start there, then pick the column that fits.
Dig deeper
All providers in San Antonio · Google Fiber in San Antonio · AT&T Fiber in San Antonio · Check your address