Gemini Robotics ER 2 vs SAM 3.1: price, context and capabilities

Choose SAM 3.1 for self-hosting and data control and images as input; on the other points the two are level or the data is missing.

In short

  • A price comparison is not possible: one of them has no comparable published price.
  • Only Gemini Robotics ER 2 offers reasoning.
  • Only SAM 3.1 offers vision, self-hostable.

Open in the full comparison table

Which should you choose?

Each answer below comes straight from the published prices, specifications and independent benchmark results.

Self-hosting and data control

Choose SAM 3.1

SAM 3.1 has open weights, so you can run it on your own servers; Gemini Robotics ER 2 is only available through its provider.

Images as input

Choose SAM 3.1

SAM 3.1 accepts images as input; Gemini Robotics ER 2 does not.

Specifications side by side

Gemini Robotics ER 2SAM 3.1
ProviderGoogleMeta
CategorySpecialisedSpecialised
StatusPreviewGenerally available
Headline price$1.00 / 1M tokensNo data
Context window131kNo data
Max output66kNo data
ReleasedJuly 2026No data
Knowledge cutoffJanuary 2025No data
LicenceProprietaryOpen weights
CapabilitiesVideo input, ReasoningVision, Video input, Self-hostable
API model idgemini-robotics-er-2-previewsam-3.1

Frequently asked questions

Should I choose Gemini Robotics ER 2 or SAM 3.1?

Choose SAM 3.1 for self-hosting and data control and images as input; on the other points the two are level or the data is missing.

Which is cheaper, Gemini Robotics ER 2 or SAM 3.1?

A price comparison is not possible: one of them has no comparable published price.

What is the difference between Gemini Robotics ER 2 and SAM 3.1?

Gemini Robotics ER 2 is made by Google and SAM 3.1 by Meta. A price comparison is not possible: one of them has no comparable published price. Only Gemini Robotics ER 2 offers reasoning. Only SAM 3.1 offers vision, self-hostable.