Doubao Seed 2.1 Pro
01
Snapshot
Overall
78
rank #7 of 22
Coding
76
rank #7 of 22
Multimodal
92
rank #2 of 22
Input / Output
$0.83 / $4.17
USD per 1M tokens
Context
256K
usable recall 93
Speed
~65 tok/s
TTFT 0.5s
Aggregated from public sources and independently weighted; methodology on the Terms page. Scores within 3 points are treated as statistically tied.
02
Specs & pricing
Every tracked field. List API prices in USD per 1M tokens; verify current vendor pricing before purchase.
| Vendor | ByteDance (CN) |
| Released / current | 2026.06 |
| Licensing | Closed / managed API |
| Context window | 256K |
| Max output | 256K |
| Effective-context score | 93 |
| Input / output price | $0.83 / $4.17 per 1M tokens |
| Cache discount | Context-cache discount (rate not published) |
| Free tier | Doubao App free; free quota on the Ark platform |
| Speed / TTFT | ~65 tok/s / 0.5s |
| Function calling | 85 |
| Refusal rate | ~11% |
| English / Chinese | 72 / 95 |
| Modalities | text, image, video |
| Fine-tuning | Yes |
| Private deployment | Yes (enterprise) |
| SOC2 / no-train | no / yes |
03
Strengths & watch-outs
Strengths
- World-leading video understanding
- Excellent Chinese
- Strong agent ability
- Full 256K context
Watch-outs
- Average English
- International access via Ark only
04
Where it ranks among 22 models
Overall 78/100 (#7), coding 76 (#7), multimodal 92 (#2). See the full boards and side-by-side compare on the leaderboard.
05
Pricing in practice
Illustrative monthly bill for 100M input + 30M output tokens: $208 at list. Your mix and cache-hit ratio change this.
Illustrative model using public list rates before any enterprise agreement; cache discount: Context-cache discount (rate not published).
06
Frequently asked questions
How much does Doubao Seed 2.1 Pro cost?
List API pricing is $0.83 input and $4.17 output per 1M tokens. Context-cache discount (rate not published). Doubao App free; free quota on the Ark platform
What is Doubao Seed 2.1 Pro's context window, and is it usable end to end?
It advertises a 256K window with 256K max output; its effective-context score is 93/100, which is the better predictor of whether long-document details are actually retained.
Is Doubao Seed 2.1 Pro good for coding?
Its coding aggregate is 76/100, rank #7 of 22. It is a strong choice for most product engineering.
Can I self-host Doubao Seed 2.1 Pro?
No. It is a closed managed API (private deployment may be negotiated for enterprise; there is no weights download.
How strong is it in Chinese and on multimodal inputs?
Chinese score is 95 versus English 72; multimodal aggregate is 92/100 (rank #2), accepting text, image, video.