ByteDance Seed

Seed Evolving

Tool callingStructured outputReasoningImage inputVideo input

Rolling ByteDance Seed model for rapidly updated reasoning, coding, and agent capabilities

Context
256K
Released
3mo ago

Sources:models.dev

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

No benchmark results have been matched to this model yet.

Specifications

Model family
—
Type
Language model
Predecessor
—
Successor
—
Released
June 23, 2026
Model ID
bytedance-seed/seed-evolving
Openness
Closed
License
—
Input modalities
text, image, video
Output modalities
text
Modality
text+image+video->text
Max output tokens
256K
Hugging Face
—
Source freshness
Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
Source model
bytedance-seed/seed-evolving
Source family
seed
Last updated
2026-06-23
Model context
256K
Model output limit
256K
Open weights
No
File attachments
Yes
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Temperature control
Yes
Complete source record (JSON)
{
  "id": "bytedance-seed/seed-evolving",
  "name": "Seed Evolving",
  "description": "Rolling ByteDance Seed model for rapidly updated reasoning, coding, and agent capabilities",
  "family": "seed",
  "last_updated": "2026-06-23",
  "attachment": true,
  "reasoning": true,
  "tool_call": true,
  "structured_output": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image",
      "video"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 256000,
    "output": 256000
  },
  "release_date": "2026-06-23",
  "open_weights": false
}

Infrastructure

Provider availability

All providers
Provider endpoint data will appear after this model's first OpenRouter endpoint sync.