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Bytedance Seed: Seed Evolving

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

Source-linked seed Closed weights Released 2026-06-23
API record Report
InputT
OutputT
Input price$0.884/M
Output price$4.42/M
Context256K
Max output256K
Providers3
Inference availability

Providers

Provider-specific identifiers, limits, and listed prices per million tokens. Every row links back to the provider's own documentation.

Report a price
Providers offering Seed Evolving
ProviderProvider model IDContextMax outputInputOutputCache readCapabilitiesDocs
Volcengine Ark Coding Plan doubao-seed-evolving 256K 256K ReasoningToolsJSON Docs ↗
Ofox volcengine/doubao-seed-evolving 256K 256K $0.884 $4.42 $0.177 ReasoningToolsJSON Docs ↗
Volcengine Ark doubao-seed-evolving 256K 256K $0.891 $4.453 $0.178 ReasoningToolsJSON Docs ↗

Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.

Listed rates

Price across providers

Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.

Lowest input $0.884/M

Across 2 priced providers

Median input $0.887/M

Midpoint of listed rates

Highest input $0.891/M

Same as the lowest listed rate

Output range $4.42 – $4.453

Per million output tokens

Ofox $0.884/MLowest
Volcengine Ark $0.891/M
Cost calculator

Estimate a workload

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Excludes taxes, non-token charges, and tiered discounts.
Specification

Capabilities

Recorded from the source catalog and provider listings.

Reasoning Yes
Tool calling Yes
Structured output Yes
Attachments Yes
Vision input Yes
× Open weights No
Model family
seed
Knowledge cutoff
Not documented
License
Not documented
Release date
2026-06-23
Model ID
bytedance-seed/seed-evolving
Published evaluations

Benchmarks

Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.

Benchmark registry
No published benchmark results

ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.

Read the methodology
Catalog activity

Change log

Field-level changes detected between successful source imports.

Full change log
No changes recorded

This record has not changed within the retained import history.

Public API

Use this record

Fetch the complete source-linked model record. No key, no account, no rate-limited tier.

API documentation
Endpoint
GET https://model.kyssta.lol/api/v1/models/bytedance-seed/seed-evolving
curl
curl "https://model.kyssta.lol/api/v1/models/bytedance-seed/seed-evolving"
Common questions

Frequently asked questions

Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.

What is Seed Evolving?

Rolling ByteDance Seed model for rapidly updated reasoning, coding, and agent capabilities. It is published by Bytedance Seed and catalogued here from Models.dev.

How much does Seed Evolving cost?

Listed input pricing starts at $0.884 per million tokens from Ofox, rising to $0.891 across 2 listed providers.

What is the context length of Seed Evolving?

Seed Evolving accepts up to 256K tokens of context and returns up to 256K output tokens.

Does Seed Evolving support tool calling and structured output?

Provider catalogs list support for tool calling, structured output, reasoning, and image input.

Which providers serve Seed Evolving?

3 providers list this model: Volcengine Ark Coding Plan, Ofox, Volcengine Ark.

Are the weights for Seed Evolving open?

No. This model is served through hosted APIs only.

When was Seed Evolving released?

The catalog records a release date of 2026-06-23, last verified Sep 11, 2026.

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