Amazon's figure: >400 Mbps peak checked , from the company's own press release. It is the first public speed result for Leo Pro in the US, the mid-size antenna Amazon describes for homes and businesses. It is also the only one so far, so it is worth being exact about what it does and doesn't say.
What happened
The Army's DEVCOM C5ISR Center hosted a live demonstration of Amazon Leo at Aberdeen Proving Ground, Maryland. The release doesn't give the date of the demo; it says only that it happened recently. Per Amazon, the test used a laptop sending and receiving data as newly launched satellites passed overhead.
“hitting peak download speeds exceeding 400 Mbps”
press.aboutamazon.com, · read
What the release shows, and what it doesn't
Published by Amazon
- One peak download speed: >400 Mbps peak.
- The antenna: Leo Pro.
- The place: Aberdeen Proving Ground, Maryland.
- The setup: a laptop sending and receiving data as newly launched satellites passed overhead.
- Who: the Army's C5ISR Center hosted it; the figure is published by Amazon.
Not published
- A typical or median download speed. A peak is the single best moment, not what a connection holds through the day.
- Upload speed, for the demo or for Leo Pro in general: Not announced
- Latency, the delay that makes calls lag: Not announced
- How it was run: how many tests, how long, on what date, in what weather, and how many other users were on the network.
- An independent check. We found no outside measurement of Leo published as of Nov 3, 2026.
How it fits Amazon's own rating
Amazon's own rating for Leo Pro tops out at 400 Mbps Announced checked of download speed. Every speed on Amazon's Leo site carries the same footnote:
“Speed metrics are based on limited preliminary testing and are not guaranteed.”
leo.amazon.com (US) · read
A peak at or above the rating fits that rating, but it doesn't turn it into a measured or typical speed. The footnote still applies.
Why a peak isn't what a home would see
This part is our reading, not something Amazon said. Satellite capacity is shared by everyone a satellite serves at once, so the speed one user gets depends on how many others are online. Leo has no public customers yet; Amazon describes its current use as an employee and enterprise private preview Confirmed checked . A network with few users can post higher peaks than it will once many homes share it. Trees, roof lines, weather and the time of day also move real speeds up and down.
The fair way to compare networks is the same yardstick for both: the median speed across many real users. Ookla's US median download for Starlink was 127.39 Mbps Confirmed checked in Q1 2026. For Amazon Leo there is no such figure yet: Not announced checked . A median from many users' tests and a single peak from one demo can't be lined up against each other.
What comes next
Amazon's release says it and the Army plan more advanced tests after this first one, including higher-speed connections, mobile use and links to the Army's own field networks. It gives no dates. When a measured, typical speed for Leo appears, from Amazon, the FCC or an independent tester, we'll add it to the tracker with its source and date.
Leo Pro so far
- announced
US Army demo: Leo Pro hits peak downloads above 400 Mbps
At Aberdeen Proving Ground in Maryland, the Army's C5ISR Center tested Amazon Leo with a Leo Pro antenna; Amazon said a laptop reached peak download speeds above 400 Mbps as new satellites passed overhead.
Source: press.aboutamazon.com · checked
- announced
Amazon Leo is being tested by employees and select businesses
Amazon said Leo was being tested with employees and select enterprise customers in a private preview, and that it expected to begin rolling out initial service in certain locations later in 2026.
Source: aboutamazon.com · checked
- announced
Leo Nano, Pro and Ultra: final terminal line-up
With the rename, Amazon named its terminals Leo Nano (7 x 7 in, up to 100 Mbps down), Leo Pro (11 x 11 in, up to 400 Mbps) and Leo Ultra (20 x 30 in, up to 1 Gbps down and 400 Mbps up). Ultra, revealed in final form on 24 November 2025, is aimed at businesses.
Source: aboutamazon.com · checked
- announced
Enterprise preview begins: select businesses test Amazon Leo
Amazon began shipping Leo Pro and Leo Ultra units to select business customers in a private enterprise preview, ahead of what it called a broader commercial rollout in 2026.
Source: aboutamazon.com · checked
Deciding whether to wait for Amazon Leo? Take the buy-or-wait check: a few quick questions give one dated answer.
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How these facts were checked
We read every source listed below on the date shown. Quotes are copied from the source text and matched to it word for word, and every Amazon Leo item carries a label for how sure it is (confirmed, announced, planned, reported, unconfirmed or not announced). This post was drafted with AI assistance from those sources, and each number, date and quote was checked against them. It is dated: if the story moves on, we add a dated update instead of quietly rewriting it. Read the editorial policy.
Where each fact comes from
- press.aboutamazon.com/2026/10/u-s-army-c5isr-completes-successf… (primary source) · checked
- leo.amazon.com/technology (primary source) · checked
- aboutamazon.com/news/innovation-at-amazon/what-is-amazon-projec… (primary source) · checked
- leo.amazon.com (primary source) · checked
- aboutamazon.com/news/amazon-leo/amazon-leo-uzbekistan (primary source) · checked
- ookla.com/articles/starlink-hits-new-us-highs (primary source) · checked
- ookla.com/research/reports/us-broadband-performance-report-h1-2… (primary source) · checked
- aboutamazon.com/news/amazon-leo/amazon-leo-satellite-internet-u… (primary source) · checked