ByteDance: Doubao-Seed-2.0-pro API
Doubao-Seed-2.0-Pro (v260215) is ByteDance's most advanced foundation model to date, released during the 2026 Lunar New Year to power the next generation of AI-native applications. It introduces a breakthrough "Dense-Reasoning" transformer architecture that bridges the gap between traditional LLMs and specialized reasoning models. Specifically optimized for "Agentic Workflows," it excels at decomposing high-level goals into executable sub-tasks with a 15% higher success rate than its predecessor (v1.8). In 2026, it is recognized as a top-tier multimodal model, capable of analyzing hour-long videos (up to 2,560 frames) and performing professional-level coding, mathematical derivation, and strategic planning. It is positioned as a direct competitor to GPT-5.2 and Gemini 3 Pro.
- Context window: 256,000 tokens
- Max output: 128,000 tokens
- Input: text, image, video, file
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2026-02-13
- Knowledge cutoff: 2026-01-31
Frequently Asked Questions
What is the context window of Doubao-Seed-2.0-pro?
Doubao-Seed-2.0-pro supports a context window of up to 256,000 tokens.
Does Doubao-Seed-2.0-pro support function calling?
Yes. Doubao-Seed-2.0-pro supports tool / function calling.
Does Doubao-Seed-2.0-pro support reasoning?
Yes. Doubao-Seed-2.0-pro is a reasoning-capable model.
What is the knowledge cutoff of Doubao-Seed-2.0-pro?
The knowledge cutoff of Doubao-Seed-2.0-pro is 2026-01-31.