Skip to content
ModelCap

Intern S1 mini

Official publisher releaseOpen weights7d #180 → #168

Internlm·#168 of 352 on the current board

Intern S1 mini is a language model from Internlm. It ranks #168 of 352 on ModelCap's current board, with an Index score of 39.3, modeled from the publisher's launch results against measured models. Its score range of 21.9–56.7 spans positions #99–#279. Its weights are openly downloadable.

Figures as of 6 Nov 2026, 14:10 UTC · download the public dataset · methodology

ModelCap Index · Current board
39.3#168
Modeled from the publisher's launch results against measured models · range 21.9–56.7
Market Gravity
11.0Decreased by 0.1
Secondary market signal

OpenRouter endpoint status could not be refreshed. This model is not treated as currently served until a successful observation arrives.

Input
Self-hosted
weights only · no listed API price
Output
Self-hosted
weights only · no listed API price
Context
—
tokens
Providers
0
endpoints

Providers

Uptime measured over the last 30 minutes

Current provider status is unavailable.

Reported evaluation leads (5)

Not independent measurement

Structured rows reported in this exact model repository at the pinned revision below. They are the publisher talking about itself: never measured evidence, never a score input on their own. Rows marked as used were laddered against independently measured peers inside the launch-card channel of this model's modeled placement, with the replay-measured optimism haircut applied; the others played no part.

Dataset / taskMetricValueRevisionProvenance
MBZUAI/longshot-bench
overall
—41.45
Unpinned
not published
Reported
Not used in launch estimate
MBZUAI/longshot-bench
core_perception
—34.47
Unpinned
not published
Reported
Not used in launch estimate
MBZUAI/longshot-bench
reasoning
—46.68
Unpinned
not published
Reported
Not used in launch estimate
MBZUAI/longshot-bench
information
—40.37
Unpinned
not published
Reported
Not used in launch estimate
MBZUAI/longshot-bench
multimodal
—44.28
Unpinned
not published
Reported
Not used in launch estimate

ModelCap Index · Current board

Methodology
39.3
Modeled from the publisher's launch results against measured models
Current board
#168 of 352
Score range
21.9–56.7
Rank range
#99–#279
Technical details
Public rank basis
Modeled · peer benchmarks (architecture)
Evidence label
Modeled · peer benchmarks · 4 reported rows against measured corpus ladders (67%); global-corpus-prior over 210 held-out anchors (33%); shrunk 6.8 up toward the measured corpus
Index support
20.1% · limited
Identity binding
Exact catalogue product · internlm/internlm/Intern-S1-mini · aggregates disclosed benchmark configurations · endpoint configuration not claimed · artifact metadata internlm/Intern-S1-mini@0f25c8f60f4190a18dd6620c94bdccedbebc208d (not the evaluation revision)
Index observations used
0
Qualified Index evidence point
39.3
How this position was produced · fused launch placement

No general-family board lists this model yet. Its point estimate is the precision-weighted mean of every channel that spoke for it; each channel’s share is the weight it carried. Independent measurements replace this placement as boards list the model.

Fused estimate
39.3 ± 13.6
Independent share
0%
Shrink toward corpus
+6.8
Optimism haircut
None applied
Method
precision-weighted-v1
Channels fused into this model’s launch placement
ChannelEstimateShare
Corpus ladder · not independent
4 reported rows against measured corpus ladders
32.5 ± 16.667%
Publisher corpus prior · not independent
global-corpus-prior over 210 held-out anchors
53.5 ± 23.833%
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
—
Evidence status
No admitted measured evidence
General preference
—
Coding
—
Agents & tools
—
Reasoning
—
Evidence breadth
0%
Evidence coverage
0%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
—
Liquidity (providers × uptime)
—
Open reach (HF downloads)
66.9
Surface (context / tools / modalities)
15.0
Freshness
18.3
  • · HF 30d downloads 4238
  • · Catalogue: modalities Text/Image
  • · First seen 2025-08-18

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Experimental capability estimate

Estimate policy
22.8
6.7–38.8 uncertainty interval
Excluded from rank
Confidence
71%
Training support
221 models · 129 lineages
Out-of-domain check
in domain
Feature coverage
71%
Lineage-held-out error
8.3 MAE

Experimental estimate. This layer predicts from admitted evidence and safe metadata only. It never enters ModelCap Score or rank.

Deployment readiness

Metadata index
47.9
partial · 52% metadata coverage
Not capability
Artifact reproducibility
85.0
Access & legal clarity
100.0
Deployability
8.0
Evaluation provenance
0.0

Not yet published: the base model it derives from, a current serving provider, measured provider uptime, published provider pricing, declared context and output limits, admitted benchmark results, results across several capability areas, results from more than one source, a confident match to its benchmark entries, pinned evaluation dataset versions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
11.0
OpenRouter weekly popularity
Not listed

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

No matched Arena rating

This model is visible because it is available in the live catalogue, but it has no trustworthy community result yet. ModelCap does not infer a quality score from price, features, or market activity.

Market Gravity breakdown

Usage55%
0.0

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
0.0

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
66.9

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
18.3

Time since first public availability, on a six-month half-life.

Specification

Model ID
internlm/Intern-S1-mini
Declared output cap
Unknown

OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. OpenRouter metadata

Inputs
Text, Image
Outputs
Text
Cached input tokens
Not offered
First seen on OpenRouter
18 Aug 2025

Capabilities

  • Not supported: Reasoning
  • Not supported: Tool use
  • Not supported: Structured output
  • Not supported: Response format
  • Not supported: Moderated

Weights & access

Open weights. Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI.

Access
Open weights
Licence
apache-2.0
Pinned revision
0f25c8f60f41
Parameters
8.5B
Architecture
InternS1ForConditionalGeneration
Model type
interns1
Hugging Face downloads (30d)
4K
Downloads (all time)
114K
Likes
114
Repository updated
29 Mar 2026, 04:49 UTC

Alternatives to Intern S1 mini, by the numbers

Ranked neighbours

Models within 3 places of #168 on the ModelCap Index.

Other ranked Internlm models

The same publisher's other current models with a public Index position.

Intern S1 mini: common questions

How does Intern S1 mini rank among AI models?

Intern S1 mini holds ModelCap Index position #168 of 352 ranked language models as of 6 November 2026, with an Index score of 39.3 (interval 21.9–56.7); evidence: modeled · peer benchmarks. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.

How much does Intern S1 mini cost per 1M tokens?

No live API price is listed for Intern S1 mini in the current snapshot as of 6 November 2026 because the latest endpoint refresh was unavailable. ModelCap shows a price only when a provider currently lists one.

Is Intern S1 mini open-weight?

Open weights (apache-2.0). Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI. The repository is internlm/Intern-S1-mini on Hugging Face.

Which benchmarks has Intern S1 mini been evaluated on?

Intern S1 mini's Index position rests on the evidence listed on this page; it has no result on the public boards ModelCap tracks as separate leaderboards as of 6 November 2026. The evidence panel names each source and its publication date.

When was Intern S1 mini released?

Intern S1 mini first appeared in the catalogue on 18 Aug 2025. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.