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Intern-S1 Mini

Shanghai AI LaboratoryOpen WeightsPending Human Review

Intern-S1 Mini is the compact member of Shanghai AI Laboratory’s scientific multimodal model family. It pairs an 8B language backbone with a roughly 300M vision encoder, retaining scientific question answering, diagram interpretation, and reasoning in a smaller deployment footprint than the 241B flagship. The release provides Apache-licensed weights and hosted inference. The official announcement dates the independently released Mini checkpoint to August 21, after the July 26 flagship. Its API documentation specifies a 32K context window.

2025-08-21
8.3B
Dense Transformer with vision encoder
Apache-2.0

Specifications

Parameters
8.3B
Architecture
Dense Transformer with vision encoder
License
Apache-2.0
Context Window
32,768 tokens
Type
multimodal
Modalities
textimage

Benchmark Scores

Advanced Specifications

Model Family
Intern-S
API Access
Available
Chat Interface
Available
Multilingual Support
Yes

Capabilities & Limitations

Capabilities
scientific reasoningimage understandingmultilingual
Known Limitations
Smaller model trades capability for deployment efficiencyResearch output requires validationNo image generation is established
Notable Use Cases
local research assistantsscientific diagramsdomain adaptation

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