Dola Seed 2 Pro
ByteDance
Key facts · verified Oct 29, 2026
Dola Seed 2 Pro is a ByteDance model. Its API price is $0.50 per million input tokens and $3 per million output tokens (for prompts up to 128K (BytePlus ModelArk)). Its context window is 256K tokens. It ranks #68 on LMArena's text leaderboard (Elo 1456, read 1 Nov 2026). Source: docs.byteplus.com.
ByteDance's Seed 2.0 Pro language model on BytePlus ModelArk (model ID seed-2-0-pro-260328). It accepts prompts up to 256K tokens and is billed at $0.50 per 1M input and $3.00 per 1M output tokens up to 128K, doubling above that, with half-price offline inference.
Pricing & specs checkedSource: vendor documentation · checked Oct 29, 2026LMArena: 1456 Elo (rank 68) · source · retrieved Nov 1, 2026
Full Specifications
$0.50 / $3 per million tokens | |
|---|---|
| Identity | |
| Developer | ByteDance |
| Licence | Proprietary |
| Self-hostable | No |
| Cost | |
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $1.125 / 1M tokens |
| Input price | $0.500 / 1M tokens |
| Output price | $3.000 / 1M tokens |
| Cached input | $0.10 per 1M tokens |
| Batch discount | 50% (offline inference) |
| Capacity | |
| Context window | 256K tokens |
| Long-context surcharge | Prompts over 128K: $1.00 / $6.00 per 1M tokens |
| Access | |
| API | Yes — BytePlus ModelArk |
| Measured quality | |
| LMArena Elo | 1456 (checked Nov 2026) |
| LMArena rank | Rank 68 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 1294 |