SA
Shanghai AI Lab
Multimodal model · China ·Jul 2026

Intern-S2 Preview 397B

Multimodal Open Source
397B
Parameters
262.1K
Context

About Intern-S2 Preview 397B

Intern-S2 Preview 397B is an AI model developed by Shanghai AI Lab, in the multimodal category, released in 2026, made available as an open-source model with 397B params. Shanghai AI Lab's Intern-S2 Preview is a 397B multimodal model supporting thinking mode toggle, tool use, and long-context up to 512K with YaRN. Available on HuggingFace with vLLM serving support.

On this page you'll find Intern-S2 Preview 397B's full specifications, including a context window of 262.1K tokens. Review provider pricing and benchmark scores below, or compare Intern-S2 Preview 397B head-to-head with other multimodal models.

→ More models by Shanghai AI Lab → All multimodal models → AI benchmarks leaderboard

Run Intern-S2 Preview 397B locally — what to buy

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Sized to what Intern-S2 Preview 397B actually needs (~262k context at Q4), not to the biggest GPU: Good = cheapest that runs it, Better = best value, Best = most headroom. Speed is a hardware estimate; anything past ~120 tok/s is shown as instant.

Best
Instinct MI430X
Consumer GPU · price n/a
~80.7 tok/s
Q4 · fits full context · up to 262k ctx
Runs with: ExLlamaV2, KoboldCpp, LM Studio
See full estimate →

Software support

·ExLlamaV2 ·KoboldCpp ·LM Studio ·MLX ·Ollama ·SGLang ·TensorRT-LLM ·llama.cpp ·vLLM ?KTransformers ?text-generation-webui

✓ measured · · compatible · — not supported. Informational only — speed is hardware-based.

Consumer GPU
67.9–80.7 tok/s
4 options →
Datacenter GPU
20.8 tok/s
1 option →

Community

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Frequently asked questions

What is Intern-S2 Preview 397B? ▶

Shanghai AI Lab's Intern-S2 Preview is a 397B multimodal model supporting thinking mode toggle, tool use, and long-context up to 512K with YaRN. Available on HuggingFace with vLLM serving support. It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Intern-S2 Preview 397B? ▶

Intern-S2 Preview 397B was developed by Shanghai AI Lab and released in 2026.

Is Intern-S2 Preview 397B open source or proprietary? ▶

Intern-S2 Preview 397B is released as open source — its weights are publicly available to download, run locally and fine-tune.

What is Intern-S2 Preview 397B's context window? ▶

Intern-S2 Preview 397B supports a context window of 262.1K tokens, and has 397B params.

How much does Intern-S2 Preview 397B cost? ▶

Pricing for Intern-S2 Preview 397B depends on the provider. See the providers table on this page for the latest API rates.

How does Intern-S2 Preview 397B perform on benchmarks? ▶

Benchmark scores for Intern-S2 Preview 397B are listed on this page as they are published. You can compare it head-to-head with other models on the GenAIList compare tool.

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