Intern-S2-Preview-397B-FP8

Checkpointinternlm/Intern-S2-Preview-397B-FP8Model card indexedModel card

Support summary

Intern-S2-Preview-397B-FP8 is a checkpoint published by InternLM, built on the InternS2PreviewForConditionalGeneration architecture. vLLM lists its architecture, but not this exact checkpoint.

Configured context: 262,144 tokens
License: apache-2.0

Hugging Face model card

Publisher: InternLM
Task: image text to text
License: apache-2.0
Library: transformers
Architecture: InternS2PreviewForConditionalGeneration
Weight tensor elements: 403.4B
Tensor types: F32, F8_E4M3, BF16
Quantization: fp8
Configured context: 262,144 tokens
Base models: internlm/Intern-S2-Preview-397B
Weight access: Public
Repository created: 2026-07-16

Source 1 Source 2 Source 3Reviewed 2026-09-05

Model notes and sources

Engine support

3 engines

Engine support for Intern-S2-Preview-397B-FP8
Engine	Release	Evidence scope	Last known supported
vLLM	`0.28.0`Newest indexed	Architecture listed; exact checkpoint unknown	No supported release indexed
Features, dependencies and evidence for vLLM 0.28.0
SGLang	`0.5.19`Newest indexed	No matching evidence curated	No supported release indexed
Features, dependencies and evidence for SGLang 0.5.19
TensorRT-LLM	`1.2.1`Newest indexed	No matching evidence curated	No supported release indexed
Features, dependencies and evidence for TensorRT-LLM 1.2.1