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Qwen3 VL 4B (Reasoning) vs Step3 VL 10B

Alibaba · released

Wins 2 of 7 areas

Agents · Long documents

StepFun · released

Wins 5 of 7 areas

Coding · Reasoning · Facts · Images and charts · Following instructions

Step3 VL 10B is the stronger all-rounder.Qwen3 VL 4B (Reasoning) is better at agents.

Scores updated · 27 tests both models report · How we compare

The biggest differences

The tests each model wins by the widest margin, up to three each. Scores are out of 100.

Where Step3 VL 10B pulls ahead

  • Graduate-level biology, physics and chemistry questionsGPQA Diamond+19.6points aheadStep3 VL 10B69Qwen3 VL 4B (Reasoning)49.4
  • Code for real scientific research problemsSciCode+14points aheadStep3 VL 10B31.1Qwen3 VL 4B (Reasoning)17.1
  • Follows unfamiliar, precisely checkable instructionsIFBench+13.6points aheadStep3 VL 10B50.2Qwen3 VL 4B (Reasoning)36.6

Where Qwen3 VL 4B (Reasoning) pulls ahead

No clear win on a test scored out of 100.

Every test, side by side

All 27 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingStep3 VL 10B

Full coding ranking

AgentsQwen3 VL 4B (Reasoning)
  • GDPValQwen3 VL 4B (Reasoning) by 13.813.80+13.8

Full agents ranking

ReasoningStep3 VL 10B

Full reasoning ranking

FactsStep3 VL 10B

Full facts ranking

Images and chartsStep3 VL 10B
  • MMMU-ProStep3 VL 10B by 125264+12
  • OCRBenchStep3 VL 10B by 8.280.889+8.2
  • MathVistaStep3 VL 10B by 4.579.584+4.5
  • MMStarStep3 VL 10B by 4.473.277.6+4.4
  • BLINKStep3 VL 10B by 3.463.466.8+3.4

Full images and charts ranking

Long documentsQwen3 VL 4B (Reasoning)
  • AA-LCRQwen3 VL 4B (Reasoning) by 21.321.30+21.3

Full long documents ranking

Following instructionsStep3 VL 10B
  • IFBenchStep3 VL 10B by 13.636.650.2+13.6

Full following instructions ranking

Other results12 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, Qwen3 VL 4B (Reasoning) or Step3 VL 10B?

Step3 VL 10B wins five of the seven areas where both have results: coding, reasoning, facts, images and charts and following instructions. Qwen3 VL 4B (Reasoning) wins agents and long documents.

Which is better for coding?

Step3 VL 10B. It wins 2 of the 2 coding tests both models report; Qwen3 VL 4B (Reasoning) wins none.

How do you compare the two?

We use the 27 benchmark tests both models have published scores on. The verdict counts the 15 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 12 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.