Intern-S2-397B

Intern-S2-397B ranks first on 3 of the 12 benchmarks it has scores on.

Shanghai AI Lab Released 13 Sep 2026 Family Intern-S2 The lab's model card

Benchmarks with a score

Ranked first, out of five or more models

In the top three

Shanghai AI Lab Sep 2026

Open weights Flagship

No Epoch Capabilities Index score yet

Where it ranks

Its best score on each benchmark, and where that ranks among every model with a score there. We rank each model once, at its best setting.

Benchmark	Score		Rank	Source
MMLU-Pro	89.8%		#1 of 151	Model card
AdvancedIF	71.6%		#5 of 6	Model card

Benchmark	Score	Rank	Source
FrontierScience	87%	#1 of 7	Model card
HMMT 2026	93.6%	#5 of 18	Model card
SciReasoner evaluation suite	63.3%	#1 of 2	Model card
IMO-ProofBench	38.4%	#5 of 5	Model card
AdvancedMathBench	58.1%	#1 of 1	Model card
SGI-Bench	51.9%	#1 of 1	Model card

Benchmark	Score	Rank	Source
SWE-bench Multilingual	84%	#8 of 70	Model card
SWE-Bench Pro	68.5%	#9 of 77	Model card
SciCode	47.6%	#14 of 47	Model card

Benchmark	Score		Rank	Source
Terminal-Bench 2.1	64%		#39 of 53	Model card

Benchmark	Score	Rank	Source
MMMU-Pro	81.7%	#6 of 72	Model card
Scientists' First Exam (SFE)	60.7%	#1 of 5	Model card
MicroVQA	69.7%	#1 of 3	Model card
ChartQA Pro	71.1%	#3 of 8	Model card
XLRS-Bench	51.4%	#4 of 4	Model card

Benchmark	Score	Rank	Source
Biology-Instructions	55.7%	#1 of 2	Model card
Mol-Instructions	54%	#1 of 2	Model card
MolecularIQ	62.4%	#1 of 1	Model card
TOMG-Bench	66.8%	#1 of 1	Model card

The benchmarks the lab chose to headline, with the scores it gave.