Model

Seed 2.2 Pro

CLOSED

ByteDance · Doubao Seed family · released Sep 10, 2026

ByteDance's September 10, 2026 Seed 2.2 Pro — the second-quarterly bump to the Doubao Seed line (2.1 Pro was June 24). $0.90/$4.40 per Mtok keeps it far under every Western frontier price while the launch table pushes the vision/agentic rows ByteDance always leads with: Video-MME Pro 90.4 (a new revision it co-announces), OSWorld 3.0 74.6, MathVision 93.1. Text-side reasoning rows improve by 1.5-2.5 points across the board. As with Seed 2.1, the numbers are vendor-run but the suite is broad and consistent with ByteDance's published cadence.

ReasoningCodingVisionFunction callingTool useAgentic

2691.8

Elo · rank #19

Parameters

Undisclosed

Active params

—

Context

256K tokens

Architecture

Proprietary multimodal flagship in the Doubao Seed line; 256K-token context

License

Proprietary

Languages

—

API price (in/out)

$0.9 / $4.4

Modalities

text · vision

Benchmark results

Bar shows position within the tracked field; marker = field best

Agents' Last ExamAgents43.9%#11

best: GPT-6 Astra · 59.3%

ARC-AGI-2Reasoning65.8%#14

best: GPT-6 Astra · 94.6%

BrowseCompAgents87.5%#7

best: Kimi K3.1 · 92.4%

CharXivVision86.7%#4

best: Qwen3.8-Flash-Next · 90.6%

GDPvalAgents88.6%#1

best: this model · 88.6%

Humanity's Last ExamReasoning45.2%#17

best: Claude Opus 5 · 64.7%

MathVisionVision93.1%#1

best: this model · 93.1%

MathVistaVision91.4%#1

best: this model · 91.4%

MMMU-ProVision82.9%#5

best: Claude Opus 4.7 · 85.5%

OSWorld 3.0Agents74.6%#1

best: this model · 74.6%

SuperGPQAReasoning72.4%#2

best: Qwen3.7-Max · 73.6%

Terminal-Bench 2.0Coding73.6%#25

best: Gemini 3.8 Flash · 89.4%

Video-MME ProVision90.4%#1

best: this model · 90.4%

Run it locally

Closed weights — available via API only. No local deployment.

Input / M tok

$0.9

Output / M tok

$4.4

Doubao Seed family

Elo progression across releases

Seed 2.1 ProJun 20262594.3 Seed 2.2 ProSep 20262691.8

Resources

DOCShttps://www.volcengine.com/docs/82379/1541523 APIAvailable via ByteDance API

API price $0.9/$4.4 · each benchmark row carries its own source badge (see methodology)