Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | DJI - Osmo Action 3 | GoPro - HERO (2024) |
|---|---|---|
| Max 4K fps | 120 | 30 |
| Waterproof depth | 16 m | 5 m |
| Horizon lock | true | false |
| Max video | 4K120 | 4K30 |
Between the Osmo Action 3 and HERO (2024), the Osmo Action 3 comes out ahead in max 4k fps / waterproof depth, while the HERO (2024) wins on several specs. Overall, the Osmo Action 3 scores 76.5 and the HERO (2024) scores 52.1 on our Mars Score.
Which should you buy?
The Osmo Action 3 is the clear pick on raw spec strength, leading by 24.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Osmo Action 3 if you care most about max 4k fps / waterproof depth. The biggest gaps in its favor are max 4k fps, waterproof depth, horizon lock, among others. The single most decisive one: Max 4K fps — 300.00% more. 120 vs 30.
The HERO (2024) similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable stabilization, so those specs do not separate the two — focus on the differences below.
Bottom line: the Osmo Action 3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: DJI - Osmo Action 3 or GoPro - HERO (2024)?
DJI - Osmo Action 3 leads the current Mars Score by 24.4 points.The more useful decision is the trade-off behind that result: compare max video, max 4k fps, waterproof depth against the way you will actually use the product.
Choose DJI - Osmo Action 3 if…
DJI - Osmo Action 3 has the measurable edge on max fps 4k, water depth m, has horizon lock.
Choose GoPro - HERO (2024) if…
GoPro - HERO (2024) does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why DJI - Osmo Action 3 wins
- ▲Max 4K fps — 300.00% more. 120 vs 30.
- ▲Waterproof depth — 220.00% more. 16 m vs 5 m.
- ▲Has Horizon lock.
- ▲Max video: 4K120 (vs 4K30).
Why GoPro - HERO (2024) wins
- No decisive advantages.
Spec comparison
Video
| Spec | DJI - Osmo Action 3 | GoPro - HERO (2024) |
|---|---|---|
| Max video | 4K120lead | 4K30 |
| Max 4K fps | 120lead | 30 |
| HDRⓘ | truelead | false |
| Log profileⓘ | false | false |
Stabilization
| Spec | DJI - Osmo Action 3 | GoPro - HERO (2024) |
|---|---|---|
| Horizon lock | truelead | false |
| Stabilization | advanced | advanced |
Durability
| Spec | DJI - Osmo Action 3 | GoPro - HERO (2024) |
|---|---|---|
| Waterproof depth | 16 mlead | 5 m |
| Weight | 145 g | 86 glead |
| Removable lens | false | false |