Seed Evolving
by ByteDance SeedChat
Rolling ByteDance Seed model for rapidly updated reasoning, coding, and agent capabilities
- Context
- 256K tokens
- Max output
- 256,000 tokens
- Released
- 2026-06-23
- Weights
- Closed
bytedance-seed/seed-evolving · also seen as doubao-seed-evolving, volcengine/doubao-seed-evolving
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-06-23
- Weights
- Closed
- Input
- Text, Image, Video
- Output
- Text
- Context window
- 256,000 max across endpoints
- Max output
- 256,000
- Providers
- 2 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.891 in · $4.45 out per 1M tokens · 1 of 2 providers have a comparable price
More details
- Last updated
- 2026-06-23
- Knowledge cutoff
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperature
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
No change since 19 Oct 2026. The cheapest direct price has been $0.891 in / $4.45 out per 1M tokens at Volcengine Ark on every data refresh since then.
Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs Seed Evolving |
|---|---|---|---|---|---|
| InklingThinking Machines | $1.47 | $0.95 | $4.05 | 65.5K | −0% cheaper |
| Sakana NamazuSakana AI | $1.46 | $0.95 | $4.00 | 262K | −1% cheaper |
| Grok 4.20 Multi Agent BetaSpaceXAI | $1.46 | $1.25 | $2.50 | 2M | −1% cheaper |
| Grok 4.20 Non-ReasoningSpaceXAI | $1.46 | $1.25 | $2.50 | 2M | −1% cheaper |
| Grok 4.20 Beta Non-ReasoningSpaceXAI | $1.46 | $1.25 | $2.50 | 2M | −1% cheaper |
| Grok 4.20 ReasoningSpaceXAI | $1.46 | $1.25 | $2.50 | 2M | −1% cheaper |
| Grok 4.20 Beta ReasoningSpaceXAI | $1.46 | $1.25 | $2.50 | 2M | −1% cheaper |
| Grok 4.20xAI | $1.46 | $1.25 | $2.50 | 1M | −1% cheaper |
More from ByteDance Seed
Newest ByteDance Seed models in the catalogue. All ByteDance Seed models
| Model | Released | Context | Listed price |
|---|---|---|---|
| Seedream 5.0 Flash | 2026-10-01 | — | unpriced |
| Seed Audio 1.0 | 2026-09-25 | — | unpriced |
| Seedance 2.5 | 2026-08-07 | — | unpriced |
| Seedream 5.0 Pro | 2026-07-11 | — | unpriced |
| Seed 2.1 Turbo | 2026-06-23 | 262K | from $0.50 |
| Seed Character | 2026-06-23 | 256K | from $0.119 |
| Seed 2.1 Pro | 2026-06-23 | 256K | from $0.891 |
| Seed 2.1 Turbo | 2026-06-23 | 256K | from $0.445 |