Sonar Pro vs Ternary Bonsai 2 27B
Ternary Bonsai 2 27B costs 30.0x less per output token than Sonar Pro ($0.50 vs $15.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $15.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.50
Sonar Pro or Ternary Bonsai 2 27B: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Compare them on price, context and the boards below.
No benchmark has tested both yet. Sonar Pro has results on LiveCodeBench (Artificial Analysis run), AA Intelligence Index and GPQA Diamond (Artificial Analysis run); Ternary Bonsai 2 27B has none yet. Compare them on price and context instead.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Sonar Pro has a AA Intelligence Index result, 7.6.
Directional only
Long documents
Listed context window
Ternary Bonsai 2 27B
Ternary Bonsai 2 27B takes 262K tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Ternary Bonsai 2 27B
Sonar Pro $0.011, Ternary Bonsai 2 27B $0.0003 per turn.
List prices
At a glance
- Coding index
- Sonar Pro not benchmarked, Ternary Bonsai 2 27B not benchmarked.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- Sonar Pro $15.00 against Ternary Bonsai 2 27B $0.50 per million output tokens, 30.0x apart.
- Context window
- Sonar Pro takes 200K tokens, Ternary Bonsai 2 27B 262K.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
CodingDirectional onlySix of these boards feed the Vibe Coding Index1 board measured
| Benchmark | Sonar Pro | Ternary Bonsai 2 27B | Leader |
|---|---|---|---|
| LiveCodeBench (Artificial Analysis run) | 27.5% | Not measured | Only Sonar Pro measured |
| Neither model has a result on the other 38 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Sonar Pro | Ternary Bonsai 2 27B | Leader |
|---|---|---|---|
| AA Intelligence Index | 7.6 | Not measured | Only Sonar Pro measured |
| Neither model has a result on the other 1 board here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Sonar Pro | Ternary Bonsai 2 27B | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 57.8% | Not measured | Only Sonar Pro measured |
| Humanity's Last Exam (Artificial Analysis run) | 6.6% | Not measured | Only Sonar Pro measured |
| Neither model has a result on the other 20 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Sonar Pro | Ternary Bonsai 2 27B | Leader |
|---|---|---|---|
| MMLU Pro (Artificial Analysis run) | 75.5% | Not measured | Only Sonar Pro measured |
| Neither model has a result on the other 17 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Ternary Bonsai 2 27B costs less
Repository review
50K input + 3K output tokens
Ternary Bonsai 2 27B costs less
Agent loop
200K input + 10K output tokens
Ternary Bonsai 2 27B costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Perplexity Sonar Pro | PrismML Ternary Bonsai 2 27B |
|---|---|---|
| Maker | Perplexity | Prism-ml |
| Weights | No public weights listed | Open weights |
| Released | March 7, 2025 | September 18, 2026 |
| Context window | 200K | 262K |
| Input $/Mtok | $3.00 | $0.075 |
| Output $/Mtok | $15.00 | $0.50 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Sonar Pro better than Ternary Bonsai 2 27B for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Compare them on price, context and the boards below.
Which is cheaper, Sonar Pro or Ternary Bonsai 2 27B?
Sonar Pro costs $3.00 per million input tokens and $15.00 per million output tokens; Ternary Bonsai 2 27B costs $0.075 and $0.50. Cost per solved task is known for neither of them.
Which has the bigger context window, Sonar Pro or Ternary Bonsai 2 27B?
Ternary Bonsai 2 27B, with 262K tokens against 200K.
Has any benchmark tested both Sonar Pro and Ternary Bonsai 2 27B?
No benchmark has tested both yet. Sonar Pro has results on LiveCodeBench (Artificial Analysis run), AA Intelligence Index and GPQA Diamond (Artificial Analysis run); Ternary Bonsai 2 27B has none yet. Compare them on price and context instead. Data as of October 22, 2026.