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ByteDance

Doubao Seed 2.1 Pro

Benchmarks, price, context and versions

Direct answer: Doubao Seed 2.1 Pro is a model from ByteDance. 89.3% on GPQA Diamond, per Epoch AI.

✓ Good for

  • calculation and problems with an exact answer (#44 of 186 on OTIS Mock AIME)

✕ Not the best for

  • Not enough data in the open sources this section uses to build this block.

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is
89.3%

highest score on this metric 96.4%

52º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
95.6%

highest score on this metric 100%

44º / 186 · Epoch AI, latest version we checked

SimpleQA Verified

?
44.7%

highest score on this metric 94%

42º / 87 · Epoch AI, latest version we checked

Key specs

Origin
China
Family
Doubao Seed Pro provisional data
Weights?
closed
License
no data
Input US$/1M?
no data
Output US$/1M
no data
Context?
no data
Parameters
no data
Input
no data
OpenRouter usage?
no data
Downloads (30 days)?
no data
Use cases provisional data
Text
Dates in sources
  • 2026, published, per Epoch AI

Version history

  • no data

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Doubao Seed 2.1 Pro?

Doubao Seed 2.1 Pro is a model from ByteDance, with closed weights, used for text.

How much does Doubao Seed 2.1 Pro cost?

No data in open sources.

What is the context window of Doubao Seed 2.1 Pro?

No data in open sources.

Is Doubao Seed 2.1 Pro open source?

No. It is available through API only.

What is Doubao Seed 2.1 Pro's GPQA Diamond score?

89.3% on GPQA Diamond, per Epoch AI.

Is Doubao Seed 2.1 Pro good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Doubao Seed 2.1 Pro?

It was made by ByteDance, a lab from China.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from ByteDance

See lab

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.