Benchmark // 3
Compare devices
Channels
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Varjo XR-4
0
OpenBCI Ganglion
0
NextMind Dev Kit
Best in group
Resolution bits
—
Varjo XR-4
0
OpenBCI Ganglion
Best in group
—
NextMind Dev Kit
Price (USD)
0$
Varjo XR-4
0.0$
OpenBCI Ganglion
Lowest price
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NextMind Dev Kit
Varjo XR-4
Varjo
shipping
- Sensors
- eye-trackingpupillometryIMU
- XR platforms
- standaloneVarjo
- Sampling rate
- 200 (eye tracking) Hz
- Wireless
- tethered (DisplayPort/USB-C)
- SDK
- Varjo SDK; OpenXR; eye-tracking API
- Raw data access
- eye/gaze data via SDK
- Subscription required
- Yessome enterprise features need a Varjo subscription
- Best for
- high-fidelity MR, the hardware base Galea builds on, gaze research
- Limitations
- no neural sensing itself; tethered; enterprise pricing
OpenBCI Ganglion
OpenBCI
shipping
- Sensors
- EEGEMG
- XR platforms
- —
- Sampling rate
- 200 Hz
- Wireless
- BLE (dongle sold separately)
- SDK
- GUI + BrainFlow
- Raw data access
- unrestricted (open)
- Subscription required
- No
- Best for
- low-cost neurofeedback, simple BCI, education
- Limitations
- 4 channels; no microSD; BLE compression
xr_bci
NextMind Dev Kit
NextMind (Snap)
discontinued
- Sensors
- EEG
- XR platforms
- Meta QuestVive
- Sampling rate
- —
- Wireless
- BLE
- SDK
- NextMind SDK (Unity) — no longer supported
- Raw data access
- no raw research access
- Subscription required
- No
- Best for
- historical reference for consumer visual-cortex BCI
- Limitations
- discontinued; proprietary stimulus paradigm; no raw access