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Head-to-head comparison

Qwen3.5 4B vs Qwen3 VL 4B Instruct

Qwen3.5 4B (Qwen) and Qwen3 VL 4B Instruct (Qwen) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 7 October 2026

As of 7 October 2026, Qwen3.5 4B holds the stronger ModelCap Index position (#141 vs #206).

Which should you choose?

Choose Qwen3.5 4B if…

  • you want the stronger overall ModelCap Index position — #141 against #206 (43.1 vs 32.3 points).
  • AA τ²-Bench Telecom is your yardstick — 92.1% against 23.4%.
  • AA Humanity's Last Exam is your yardstick — 9.9% against 3.6%.
  • you want the more recently listed model — Qwen3.5 4B was listed 27 February 2026, Qwen3 VL 4B Instruct 11 October 2025.

Choose Qwen3 VL 4B Instruct if…

  • ModelCap publishes no field on which Qwen3 VL 4B Instruct leads Qwen3.5 4B for this pair.

Qwen3.5 4B vs Qwen3 VL 4B Instruct: specs, pricing and context

Specification comparison of Qwen3.5 4B and Qwen3 VL 4B Instruct
FieldQwen3.5 4BQwenQwen3 VL 4B InstructQwen
ModelCap Index position#141#206
Index score43.132.3
EvidenceEstimatedEstimated
Input price / 1M tokensUnlistedUnlisted
Output price / 1M tokensUnlistedUnlisted
Context window— tokens— tokens
Declared route output cap--
API providers listed00
Weight accessOpen weightsOpen weights
Input modalitiesText, ImageText, Image
First listed27 February 202611 October 2025
PublisherQwenQwen

Evidence: publisher-corpus-prior over 210 held-out anchors (29%); launch card against 3 resolved peers on 10 rows (71%); exceeds every named peer on 2 of 10 rows; optimism haircut 0.6 from cross-lab-probe; shrunk 3.7 up toward the measured corpus · 3 reported rows against measured corpus ladders (61%); publisher-corpus-prior over 210 held-out anchors (39%); shrunk 12.5 up toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Qwen3.5 4B vs Qwen3 VL 4B Instruct

Public benchmark boards where Qwen3.5 4B or Qwen3 VL 4B Instruct has a published result
BoardQwen3.5 4BQwen3 VL 4B InstructLeads
AA Terminal-Bench 2.1Artificial Analysis25.8%Reasoning—Only one result
AA τ²-Bench TelecomArtificial Analysis92.1%Reasoning23.4%Non-reasoningQwen3.5 4B
AA Humanity's Last ExamArtificial Analysis9.9%Reasoning3.6%Non-reasoningQwen3.5 4B

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Qwen3.5 4B vs Qwen3 VL 4B Instruct: common questions

Is Qwen3.5 4B better than Qwen3 VL 4B Instruct?

Qwen3.5 4B ranks higher on the ModelCap Index as of 7 October 2026: #141 against #206. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Qwen3.5 4B cheaper than Qwen3 VL 4B Instruct?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Qwen3.5 4B or Qwen3 VL 4B Instruct?

Qwen3.5 4B: context unknown. Qwen3 VL 4B Instruct: context unknown. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified.

Which is better for coding, Qwen3.5 4B or Qwen3 VL 4B Instruct?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Qwen3.5 4B and Qwen3 VL 4B Instruct open-weight models?

Qwen3.5 4B: Open weights. Qwen3 VL 4B Instruct: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence. A missing weight link does not identify every API or chat product that offers a model.

Where can I run Qwen3.5 4B and Qwen3 VL 4B Instruct?

ModelCap currently lists 0 API providers for Qwen3.5 4B and 0 for Qwen3 VL 4B Instruct, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Qwen3.5 4B vs Qwen3 VL 4B Instruct comparison?

Every figure and ModelCap Index position comes from the same published snapshot dated 7 October 2026. Publication and page updates happen separately; use the snapshot date shown on the page.

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