Seed-OSS Base on TruthfulQA: score, rank and what it means
Seed-OSS Base scores 74.0 on TruthfulQA, placing it #353 of 600 models in the index. The benchmark average is 73.6 and the leader is GPT-5.1 Max at 91.1.
Score distribution
The chart shows the top 10 models on TruthfulQA, with Seed-OSS Base highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | GPT-5.1 Max | OpenAI | 2000000 | $20.50 | 87.9 |
| 2 | Gemini 3 Pro Reasoning | Google DeepMind | 200000 | $19.69 | 87.5 |
| 3 | GPT-5.1 Reasoning | OpenAI | 400000 | $20.27 | 88.3 |
| 4 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 5 | GPT-5.2 | OpenAI | 2000000 | $19.71 | 88.0 |
| 6 | Gemini 3 Pro Max | Google DeepMind | 2000000 | $20.57 | 87.9 |
| 7 | Grok 4 Reasoning | xAI | 2000000 | $19.67 | 87.8 |
| 8 | Qwen3-Max Max | Alibaba Cloud | 400000 | $18.53 | 85.9 |
| 9 | GPT-5.1 | OpenAI | 2000000 | $19.01 | 86.0 |
| 10 | GPT-5.1 Turbo | OpenAI | 2000000 | $19.19 | 86.1 |
What this score means
On TruthfulQA, Seed-OSS Base sits at #353 of 600. The leader, GPT-5.1 Max, scores 91.1, so the gap to the top is 17.1 points. The median model in this index scores 76.3, which puts Seed-OSS Base below the midpoint.
ByteDance models average 75.2 on this benchmark. Seed-OSS Base is 1.2 points below that provider line, so it is a weaker result than the average ByteDance model.
Among open-weight models, the average is 72.3. Seed-OSS Base is 1.7 points above that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 74.0 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $3.14 per million input tokens, Seed-OSS Base is below the median input price of $4.00 across the 600 models scored on TruthfulQA. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Mixtral Turbo Base | Together AI | 32768 | $2.53 | 69.7 |
| Arctic Instruct | Snowflake | 65536 | $2.83 | 70.6 |
| Mixtral Turbo | Together AI | 65536 | $3.20 | 72.4 |
| Molmo | Allen Institute for AI | 32768 | $2.49 | 68.5 |
| Seed-OSS Base | ByteDance | 16384 | $3.14 | 72.2 |
| Sonar Mini | Perplexity | 65536 | $6.52 | 67.9 |
| Arctic Chat | Snowflake | 16384 | $2.70 | 69.8 |
Other benchmarks for Seed-OSS Base
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 75.8 | 311 | 48th | |
| GPQA Diamond | 68.1 | 311 | 48th | |
| SWE-bench Verified | 60.5 | 317 | 47th | |
| HumanEval | 78.1 | 288 | 52th | |
| MATH-500 | 73.4 | 353 | 41th | |
| AIME 2025 | 67.2 | 310 | 48th | |
| LiveCodeBench | 65.5 | 283 | 53th | |
| IFEval | 79.0 | 356 | 41th | |
| HellaSwag | 83.7 | 296 | 51th | |
| MMMU | 68.5 | 337 | 44th | |
| Arena Elo | 1360.4 | 343 | 43th |
FAQ
What score does Seed-OSS Base get on TruthfulQA?
Seed-OSS Base scores 74.0 on TruthfulQA in this index. The benchmark average is 73.6 and the top score is 91.1.
How does Seed-OSS Base rank on TruthfulQA?
It ranks #353 of 600 models, in the 41st percentile. The leader is GPT-5.1 Max at 91.1.
Is Seed-OSS Base good at TruthfulQA?
It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.
How is the TruthfulQA score calculated?
TruthfulQA is a safety benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Seed-OSS Base cost?
Seed-OSS Base costs $3.14 per million input tokens and $11.67 per million output tokens.