Qwen3 4B

Official publisher releaseOpen weights

Qwen3 4B is a language model from Qwen. It has been superseded and no longer holds a position on ModelCap's current board. Its weights are openly downloadable.

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

ModelCap Index · All-versions archive

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Index position pending

Market Gravity

15.6

Secondary market signal

Superseded by Qwen3.5 4B. It no longer holds a current-board position.

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

endpoints

Providers

Uptime measured over the last 30 minutes

Current provider status is unavailable.

Other versions (2)

ModelCap Index · All-versions archive

Methodology

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Index position pending

Technical details

Public rank basis: Index position pending (abstained)
Evidence label: Index position pending · no public benchmark rows
Index support: 0.0% · not applicable
Identity binding: Exact catalogue product · qwen/Qwen/Qwen3-4B · aggregates disclosed benchmark configurations · endpoint configuration not claimed · artifact metadata Qwen/Qwen3-4B@1cfa9a7208912126459214e8b04321603b3df60c (not the evaluation revision)
Index observations used: 0
Architecture fallback: abstained · 0% coverage · 0 anchors

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): 99.7
Surface (context / tools / modalities): 0.0
Freshness: 11.9

· HF 30d downloads 6675484
· Catalogue surface
· First seen 2025-04-27

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

11.6

0.0–26.8 uncertainty interval

Excluded from rank

Confidence: 76%
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

52.4

partial · 56% metadata coverage

Not capability

Artifact reproducibility: 100.0
Access & legal clarity: 100.0
Deployability: 8.0
Evaluation provenance: 0.0

Not yet published: 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: 15.6
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
Liquidity25%: 0.0
Open reach15%: 99.7
Freshness5%: 11.9

Specification

Model ID: Qwen/Qwen3-4B
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
Outputs: Text
Cached input tokens: Not offered
First seen on OpenRouter: 27 Apr 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: 1cfa9a720891
Parameters: 4.0B
Architecture: Qwen3ForCausalLM
Model type: qwen3
Hugging Face downloads (30d): 6.7M
Downloads (all time): 94.1M
Likes: 786
Repository: Qwen/Qwen3-4B
Repository updated: 26 Jul 2025, 03:46 UTC
Base lineage: Qwen/Qwen3-4B-Base

Qwen3 4B: common questions

How does Qwen3 4B rank among AI models?

Qwen3 4B is a superseded version and is not on the current board as of 6 November 2026. Its archive position, where one exists, is shown on the page; the newer version carries the current rank.

How much does Qwen3 4B cost per 1M tokens?

No live API price is listed for Qwen3 4B 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 Qwen3 4B 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 Qwen/Qwen3-4B on Hugging Face.

When was Qwen3 4B released?

Qwen3 4B first appeared in the catalogue on 27 Apr 2025. It has since been superseded by Qwen3.5 4B. Rank and price movements since then are recorded on the site's changes feed.