PrismML: Ternary Bonsai 2 27B vs ByteDance Seed: Seed 2.1 Turbo
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| PrismML: Ternary Bonsai 2 27B | ByteDance Seed: Seed 2.1 Turbo | |
|---|---|---|
| Vendor | prism-ml | bytedance-seed |
| Quality Score | 100 | 100 |
| Input Price | $0.07/M | $0.50/M |
| Output Price | $0.50/M | $2.50/M |
| Context Window | 262,144 | 262,144 |
| Max Output | 32,768 | 235,929 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Ternary Bonsai 2 27B costs $0.20 and Seed 2.1 Turbo costs $1.12, so Ternary Bonsai 2 27B is about 5.6 times cheaper for the same work.
Both read up to 262,144 tokens at once, roughly 393 pages of text.
Only Seed 2.1 Turbo offers video input.
Across the 10 tasks where they differ, Ternary Bonsai 2 27B scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
Ternary Bonsai 2 27B was released in September 2026 and Seed 2.1 Turbo in August 2026.
Pick Ternary Bonsai 2 27B if you need lower cost or the stronger all-round task scores; pick Seed 2.1 Turbo if you need video input.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | PrismML: Ternary Bonsai 2 27B | ByteDance Seed: Seed 2.1 Turbo |
|---|---|---|
| SQL Generation | 131 | 130 |
| Code Completion | 129 | 128 |
| Code Documentation | 126 | 125 |
| Regex Writing | 119 | 119 |
| CSV / Spreadsheet Cleanup | 128 | 128 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| Long-Document Summarization | 129 | 129 |
| Short-Form Summarization | 123 | 123 |
| Blog Post Writing | 119 | 118 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →