LFM2.5-VL-3B vs Seed 2.1 Pro: Specs & Benchmark Comparison
LFM2.5-VL-3B is developed by Liquid AI, while Seed 2.1 Pro comes from ByteDance. Seed 2.1 Pro was released in June 2026, and LFM2.5-VL-3B followed 2 months later in August 2026. LFM2.5-VL-3B has a published size of about 3 billion parameters; ByteDance has not disclosed the parameter count of Seed 2.1 Pro.
The two models share 4 published benchmarks. Seed 2.1 Pro leads on 4 of them. The widest gaps are on MMMU-Pro, where Seed 2.1 Pro scores 82.7% against 30.5%; SimpleVQA, where Seed 2.1 Pro scores 74.5% against 35.4%. Averaged across everything we track, LFM2.5-VL-3B sits at 63.7% and Seed 2.1 Pro at 63.7%.
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| Characteristic | LFM2.5-VL-3B | Seed 2.1 Pro |
|---|---|---|
| Company | Liquid AI | ByteDance |
| Release Date | August 12, 2026 | June 24, 2026 |
| Parameters | 3B | — |
| Multimodal | Yes | Yes |
| Average Score | 63.7% | 63.7% |
| Benchmarks | ||
| MMMU-Pro | 30.5% | 82.7% |
| SimpleVQA | 35.4% | 74.5% |
| BLINK | 61.5% | 81.4% |
| RealWorldQA | 73.1% | 86.7% |
Visual Benchmark Comparison
Verdict
LFM2.5-VL-3B leads in 1 out of 2 comparison categories.
Both models show comparable average scores: LFM2.5-VL-3B — 0.6, Seed 2.1 Pro — 0.6.
LFM2.5-VL-3B is newer: released 8/12/2026 vs 6/24/2026.
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Frequently Asked Questions
Which is better for coding — LFM2.5-VL-3B or Seed 2.1 Pro?
Which model is cheaper — LFM2.5-VL-3B or Seed 2.1 Pro?
Which has a larger context window — LFM2.5-VL-3B or Seed 2.1 Pro?
The LFM2.5-VL-3B and Seed 2.1 Pro comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the LFM2.5-VL-3B or Seed 2.1 Pro page. See also the complete list of AI model comparisons.