Seed-OSS 8B: pricing, context window and benchmarks
Seed-OSS 8B is a small open-weight model from ByteDance. It offers a 8,192-token context window, costs $1.05 per million input tokens and $5.47 per million output tokens, and averages 57.1 across the index's benchmark suite.
Pricing
Seed-OSS 8B costs $1.05 per million input tokens and $5.47 per million output tokens. A blended 3:1 input-to-output mix works out to about $2.16 per million tokens. Cached input is listed at $0.13 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $1.05 | per 1M tokens |
| Output | $5.47 | per 1M tokens |
| Cached input | $0.13 | per 1M tokens |
| Blended 3:1 | $2.16 | estimate per 1M tokens |
| 1M in + 1M out | $6.52 | estimate |
Benchmarks
Scores below are modelled estimates on a 0–100 scale. Use them to compare relative position, not as official vendor results.
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 64.3 | 464 | 23th | |
| GPQA Diamond | 54.5 | 473 | 21th | |
| SWE-bench Verified | 40.6 | 516 | 14th | |
| HumanEval | 61.3 | 480 | 20th | |
| MATH-500 | 58.6 | 483 | 20th | |
| AIME 2025 | 43.4 | 519 | 14th | |
| LiveCodeBench | 46.0 | 487 | 19th | |
| IFEval | 69.3 | 471 | 22th | |
| TruthfulQA | 62.3 | 499 | 17th | |
| HellaSwag | 70.9 | 524 | 13th | |
| MMMU | 56.6 | 479 | 20th | |
| Arena Elo | 1267.1 | 465 | 23th |
What Seed-OSS 8B is good for
Seed-OSS 8B is a small model. That makes it a good fit for classification, extraction, routing, summarization and other high-volume jobs where latency and cost dominate. It is not the right pick for open-ended frontier reasoning, but at $1.05 per million input tokens it can handle a large share of production traffic.
Strengths
- Input price of $1.05 per million tokens is at or below the index median.
- Open weights make self-hosting, fine-tuning and data-residency review possible.
Trade-offs
- Context window of 8,192 tokens is small for long-document work.
- Average benchmark score is below the index median; test it on your own task.
- Less reliable on open-ended reasoning and complex multi-step instructions.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Llama 3 Lambda 8B | Lambda | 4096 | $1.03 | 57.2 |
| Mistral Small 3 8B | Mistral AI | 8192 | $0.99 | 57.2 |
| Auto Nano | OpenRouter | 4096 | $2.83 | 57.1 |
| Seed-OSS 8B | ByteDance | 8192 | $1.05 | 57.1 |
| Codestral 7B | Mistral AI | 32768 | $1.05 | 57.0 |
| Llama 3 Replicate 8B | Replicate | 32768 | $1.00 | 57.0 |
FAQ
How much does Seed-OSS 8B cost?
Seed-OSS 8B is listed at $1.05 per million input tokens and $5.47 per million output tokens. Cached input is $0.13 per million tokens. A blended 3:1 input-to-output mix is about $2.16 per million tokens.
What is the context window of Seed-OSS 8B?
Seed-OSS 8B has a context window of 8,192 tokens and can emit up to 8,192 output tokens per request in this index.
Is Seed-OSS 8B open weights?
Yes. Seed-OSS 8B is listed as an open-weight model under a open weights licence.
How does Seed-OSS 8B score on benchmarks?
Seed-OSS 8B averages 57.1 across the scored benchmarks in this index, ranking #486 of 600 models. Its strongest relative result is Arena Elo at 1267.1.
What is Seed-OSS 8B best for?
Seed-OSS 8B is a small model. That makes it a good fit for classification, extraction, routing, summarization and other high-volume jobs where latency and cost dominate. It is not the right pick for open-ended frontier reasoning, but at $1.05 per million input tokens it can handle a large share of production traffic.