Seed 2.0 Pro API pricing
Official ByteDance Seed list price, last checked Oct 29, 2026. Updated Oct 29, 2026.
Seed 2.0 Pro costs $0.50 per 1M input tokens and $3 per 1M output tokens, cached input at $0.10, and a 256K-token context window, per ByteDance Seed's official pricing page (checked Oct 29, 2026). It's priced in the middle of the pack: number 36 of 77 by blended price ($1.12 per 1M tokens at a 3 to 1 input to output mix). On LMArena's Text Arena it ranks #28 of 51 models we price (relative score 0 out of 100). Cheaper pick: GLM-5.3 Flash scores 17 against 0 on the same board at $0.2375 blended, 4.7x less.
Seed 2.0 Pro price per million tokens
| Seed 2.0 Pro price per million tokens | USD |
|---|---|
| Input | $0.50 |
| Cached input | $0.10 |
| Output | $3 |
| Blended, 3 parts input to 1 part output | $1.12 |
| Context window | 256K tokens |
| Prompts above 128K | $1 in, $6 out |
Official note from ByteDance Seed: BytePlus ModelArk price. Prompts up to 128K. Longer prompts cost $1 in, $6 out.
What Seed 2.0 Pro costs for real work
List-price estimates for a month, no discounts. Our math, not a quote: change the token counts in the plan vs API calculator.
| Workload | Tokens a month | Seed 2.0 Pro | Qwen3.8 27B | MiMo-V2.6 Pro |
|---|---|---|---|---|
| Light: a side project or personal assistant | 2M in, 0.5M out | $2.50 | $2.50 | $1.30 |
| Medium: a small team or one product feature | 20M in, 5M out | $25.00 | $25.00 | $13.05 |
| Heavy: a production app | 200M in, 50M out | $250 | $250 | $130 |
| Medium with 80% of input cached | 20M in (16M cached), 5M out | $18.60 | n/a | $6.15 |
| Medium, every prompt above the long-prompt threshold | 20M in, 5M out | $50.00 | $25.00 | $13.05 |
How Seed 2.0 Pro ranks on LMArena
Relative score: 100 is the top model we price on that board. Rank is among the models in our price table, not the full leaderboard.
| Board | Rank | Score /100 |
|---|---|---|
| Chat (Text Arena) | #28 of 51 | 0 |
| Creative writing (Text Arena creative writing) | #39 of 51 | 0 |
| Roleplay and characters (Text Arena multi-turn) | #34 of 51 | 0 |
| Reasoning and math (Text Arena math) | #33 of 51 | 0 |
| Vision (Vision Arena) | #20 of 33 | 3 |
Closest rivals to Seed 2.0 Pro
The models nearest in price, other makers first. Ranks are on Text Arena, where we have them.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| Qwen3.8 27B | $0.50 / $3 | $1.12 | A tie on price and score. Compare |
| Qwen3.6 Plus | $0.50 / $3 | $1.12 | A tie on price and score. Compare |
| Qwen3.5 122B-A10B | $0.40 / $3.20 | $1.10 | A tie on price and score. Compare |
| ERNIE 5.1 | $0.56 / $2.53 | $1.05 | ERNIE 5.1 wins: cheaper, same score. Compare |
Cheaper alternatives to Seed 2.0 Pro
At least 40% cheaper blended, best LMArena score first.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| MiMo-V2.6 Pro | $0.435 / $0.87 | $0.5437 | MiMo-V2.6 Pro wins on both. Compare |
| GLM-5.3 Flash | $0.15 / $0.50 | $0.2375 | GLM-5.3 Flash wins on both. Compare |
| DeepSeek V4.1 Flash | $0.30 / $1.20 | $0.525 | DeepSeek V4.1 Flash wins on both. Compare |
More from ByteDance Seed
- Seed 2.0 Code Preview$0.50 in, $3 out per 1M
- Seed 2.1 Turbo$0.50 in, $2.50 out per 1M
- Seed 2.0 Lite$0.25 in, $2 out per 1M
- Seed 2.0 Mini$0.10 in, $0.40 out per 1M
FAQ
How much does the Seed 2.0 Pro API cost per million tokens?
$0.50 per 1M input tokens and $3 per 1M output tokens, plus $0.10 per 1M for cached input, as of Oct 29, 2026. A typical 3 to 1 input to output mix works out to $1.12 per 1M tokens.
Does Seed 2.0 Pro charge more for long prompts?
Yes. Prompts above 128K: $1 in, $6 out.
Is Seed 2.0 Pro cheaper than Qwen3.8 27B?
About the same. A medium month (20M input and 5M output tokens) costs $25.00 on Seed 2.0 Pro and $25.00 on Qwen3.8 27B at list price. On Text Arena, Seed 2.0 Pro ranks #28 and Qwen3.8 27B #42.
How does Seed 2.0 Pro rank on LMArena?
On Text Arena it is #28 of 51 models we price, with a relative score of 0 out of 100. It ranks on 5 of 8 boards we track.
What is a cheaper alternative to Seed 2.0 Pro?
MiMo-V2.6 Pro costs $0.435 in and $0.87 out per 1M tokens, about 2.1x less blended, and scores 23 on Text Arena against 0 for Seed 2.0 Pro.
Where does this Seed 2.0 Pro price come from?
From ByteDance Seed's official pricing page, which we check every day. This page was last checked Oct 29, 2026.