ByteDance: Seed 2.0 ProOfficial docs

ByteDance: Seed 2.0 Pro

byByteDance
Official docs

Seed 2.0 Pro is a reasoning model from ByteDance released on Mar 28, 2026. It reads text and writes text, with a 131K token context window and up to 33K tokens per reply.

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It costs $0.50 per million input tokens and $3 per million output tokens.

Modalities
In / out price
$0.50 / $3 per 1M
Context
131K
Max output
33K
Released
Mar 28, 2026
Knowledge cutoff
n/a
  • Tool calling
  • Structured output
  • Reasoning
  • Prompt caching
  • Open weights
  • Free to use

Seed 2.0 Pro pricing

USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.

Input$0.50 / 1M tokens
Output$3 / 1M tokens

What Seed 2.0 Pro costs per month

Pick a workload close to yours or type your own volumes.

Seed 2.0 Pro per month
$69.00
Without caching
$69.00
Per request
$0.0023

Supported request parameters

What you can set when you call Seed 2.0 Pro through an OpenAI compatible API.

  • Reasoningreasoning
  • Temperaturetemperature

Alternatives to Seed 2.0 Pro

Models that take the same inputs, closest in price, cheaper ones first.

  • Reads text, images, audio and video. Tool calling, structured output, reasoning. Served by 4 providers.

    by googleDec 17, 2025$0.50/M input tokens$3/M output tokens4 providers

  • Index 38.4

    Reads text and images. Tool calling, structured output, reasoning. Served by 8 providers.

    by mistralaiOct 6, 20261.05M context$0.68/M input tokens$2.09/M output tokens8 providers

  • Reads text. Tool calling, structured output, reasoning. Served by 18 providers.

    by nvidiaJun 4, 20261M context$0.50/M input tokens$2.50/M output tokens18 providers

  • Reads text. Tool calling, structured output, reasoning. Served by 56 providers.

    by deepseekApr 24, 20261M context$0.66/M input tokens$1.98/M output tokens56 providers

  • Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 25 providers.

    by googleJul 9, 20261.05M context$0.30/M input tokens$2.50/M output tokens25 providers

  • Reads text, images, audio and video, writes text and images. Reasoning.

    by amazonDec 2, 2025$0.30/M input tokens$2.50/M output tokens

More from ByteDance

All ByteDance models

Seed 2.0 Pro questions

How much does the Seed 2.0 Pro API cost?

$0.50 per million input tokens and $3 per million output tokens. The estimator on this page turns that into a monthly bill for your own workload.

What is the context window of Seed 2.0 Pro?

131,072 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.

Does Seed 2.0 Pro support tool calling?

Not through the standard tools parameter. For an agent that calls your APIs, pick a model from the alternatives below that does.

Is Seed 2.0 Pro open source?

No. ByteDance serves it through an API only, so you cannot download the weights or host it yourself.

When was Seed 2.0 Pro released?

Mar 28, 2026.

Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.