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VECTOR WIREAI INTELLIGENCE
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Qwen3 VL Thinking (8B) vs Seed-1.5-VL

Alibaba · released

Wins 0 of 1 area

—

ByteDance

Wins 1 of 1 area

Images and charts

Seed-1.5-VL is the stronger all-rounder.

Scores updated · 9 tests both models report · How we compare

Where each one wins

Tests won in each of the one area where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

Qwen3 VL Thinking (8B)$0.18 to read · $2.10 to write$2.28Price from Alibaba's own price page
Seed-1.5-VLNo current price is tracked.

The biggest differences

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

Where Seed-1.5-VL pulls ahead

  • College exam questions with charts, maps and diagramsMMMU+5.6points aheadSeed-1.5-VL79.1Qwen3 VL Thinking (8B)73.5
  • Math problems shown in pictures and chartsMathVista+4.2points aheadSeed-1.5-VL85.6Qwen3 VL Thinking (8B)81.4
  • Reads text in imagesOCRBench+3.3points aheadSeed-1.5-VL85.2Qwen3 VL Thinking (8B)81.9

Where Qwen3 VL Thinking (8B) pulls ahead

No clear win on a test scored out of 100.

Every test, side by side

All 9 tests both models report. The winning score is in its model's colour; marks a score checked independently.

Images and chartsSeed-1.5-VL
  • MMMUSeed-1.5-VL by 5.673.579.1+5.6
  • MathVistaSeed-1.5-VL by 4.281.485.6+4.2
  • OCRBenchSeed-1.5-VL by 3.381.985.2+3.3
  • MMStarSeed-1.5-VL by 2.675.377.9+2.6

Full images and charts ranking

Other results5 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 Thinking (8B) or Seed-1.5-VL?

Seed-1.5-VL wins the one area where both have results: images and charts. Qwen3 VL Thinking (8B) wins none.

How do you compare the two?

We use the 9 benchmark tests both models have published scores on. The verdict counts the 4 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 5 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.