Seed 2.0 Pro vs Step-3.5-Flash Comparison
Comparing Seed 2.0 Pro and Step-3.5-Flash across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Seed 2.0 Pro outperforms in 4 benchmarks (AIME 2025, BrowseComp, LiveCodeBench v6, SWE-Bench Verified), while Step-3.5-Flash is better at 0 benchmarks.
Seed 2.0 Pro significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
Cost data unavailable.
Context Window
Maximum input and output token capacity
Only Step-3.5-Flash specifies input context (65,536 tokens). Only Step-3.5-Flash specifies output context (8,192 tokens).
Input Capabilities
Supported data types and modalities
Seed 2.0 Pro supports multimodal inputs, whereas Step-3.5-Flash does not.
Seed 2.0 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.
Seed 2.0 Pro
Step-3.5-Flash
License
Usage and distribution terms
Seed 2.0 Pro is licensed under a proprietary license, while Step-3.5-Flash uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Seed 2.0 Pro was released on 2026-02-14, while Step-3.5-Flash was released on 2026-02-02.
Seed 2.0 Pro is 0 month newer than Step-3.5-Flash.
Feb 14, 2026
4 weeks ago
1w newerFeb 2, 2026
1 months ago
Knowledge Cutoff
When training data ends
Seed 2.0 Pro has a documented knowledge cutoff of 2024-01-01, while Step-3.5-Flash's cutoff date is not specified.
We can confirm Seed 2.0 Pro's training data extends to 2024-01-01, but cannot make a direct comparison without Step-3.5-Flash's cutoff date.
Jan 2024
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Outputs Comparison
Key Takeaways
Seed 2.0 Pro
View detailsByteDance
Step-3.5-Flash
View detailsStepFun
Detailed Comparison
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