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BAAIChina2026

RoboBrain 2.5

An AI model: software that a robot uses to perceive, plan or move. This page describes the software, not a robot.

Robotsnot stated

VersionsRoboBrain 2.5-4BRoboBrain 2.5-8B

The developer has released this model in several versions. Each figure applies to the version its source names.

Key figures as stated by the developer

3 of 6 stated · 3 gaps
  • Model type not stated
  • Controls not stated
  • Inputs ⁠A camera language
  • Access ⁠B open download
  • Parameters ⁠A 8,000,000,000
  • Base model not stated
How to read the figures
50HzA
The letter in the grey square after a figure points to the source the figure came from. Pages with several sources carry several letters.

The four states

Versions and notes in the key figures (6)

Model type

Note BAAI's wording: "a next-generation embodied AI foundation model that advances general perception, spatial reasoning, and temporal modeling".

Controls

Note README, 3D trajectory example: "Output is formatted as a list of tuples" of x and y coordinates and depth; the model returns points and traces, not robot actions.

Inputs

README examples pass an image and a text prompt ("reach for the banana on the plate"); the report describes "dense, step-aware progress prediction and execution state understanding across varying viewpoints". Images = camera, text = language.

Access

Technical report: "The code and checkpoints are available at project website"; the checkpoints are on Hugging Face.

Parameters

README model table: "4B parameter version of the RoboBrain2.5" (4B) and "8B parameter version of the RoboBrain2.5" (8B). The value is the largest released version.

Versions

RoboBrain 2.5-4B
4,000,000,000
RoboBrain 2.5-8B
8,000,000,000

Base model

Note The README says only "RoboBrain2.5 is also compatible with the official training code for Qwen3VL."

Full specifications

4 of 12 fields stated
The letter points to the source at the foot of the page. Fields without a figure are dashed: the developer does not state them — that is not the same as zero, and not the same as no.
Field Value Source and caveats
Input and output
Model typenot stated

Note BAAI's wording: "a next-generation embodied AI foundation model that advances general perception, spatial reasoning, and temporal modeling". ⁠B

Inputscamera languageA

README examples pass an image and a text prompt ("reach for the banana on the plate"); the report describes "dense, step-aware progress prediction and execution state understanding across varying viewpoints". Images = camera, text = language.

Controlsnot stated

Note README, 3D trajectory example: "Output is formatted as a list of tuples" of x and y coordinates and depth; the model returns points and traces, not robot actions. ⁠A
Size and speed
Parameters8,000,000,000A

README model table: "4B parameter version of the RoboBrain2.5" (4B) and "8B parameter version of the RoboBrain2.5" (8B). The value is the largest released version.

Versions

RoboBrain 2.5-4B
4,000,000,000
RoboBrain 2.5-8B
8,000,000,000
Where it runs and what it is built on
Base modelnot stated

Note The README says only "RoboBrain2.5 is also compatible with the official training code for Qwen3VL." ⁠A
Openness
Accessopen downloadB

Technical report: "The code and checkpoints are available at project website"; the checkpoints are on Hugging Face.

LicenseApache-2.0C

Model card of the 4B version: "license: apache-2.0". The code repository carries the "Apache License Version 2.0, January 2004" licence file.
The developer’s own claims
Works across robotsnot stated

Note The README says "task progress prediction across different tasks, viewpoints, and embodiments", but names no robot models. ⁠A

Yes only if the developer itself says the model runs on different robot models, for example robots from two manufacturers or two of one manufacturer’s models. Several units of the same robot do not count.

Not stated: Degrees of freedom controlled, Control rate, Runs where, Learns new tasks

Notes

  • BAAI describes RoboBrain 2.5 as a next-generation embodied AI foundation model for general perception, spatial reasoning and temporal modeling.
  • The RoboBrain 2.5 technical report was submitted to arXiv on 20 January 2026.
  • The Beijing Academy of Artificial Intelligence (BAAI) was founded on the initiative of the Beijing Municipal Science and Technology Commission and the Haidian District government.

Sources

One line per source, not per figure: a source has one retrieval date. The letter beside a figure points to the line it came from.