Sonar Reasoning Pro vs Bonsai 27B
At a Glance
| Compare |  Sonar Reasoning ProPerplexity |  Bonsai 27BPrismML |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $2.00Openrouter ↗ · Sep 22, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $8.00Openrouter ↗ · Sep 22, 2026 | Not reported |
| Context windowMaximum documented tokens | 128K | 262K |
| Model facts checked | Aug 29, 2026View model evidence → | Sep 18, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Sonar Reasoning Pro | Bonsai 27B |
|---|---|---|
| Developer | Perplexity | PrismML |
| Family | Sonar | Bonsai 27b |
| Model | Sonar Reasoning Pro | Bonsai 27B |
| Version | Sonar Reasoning Pro | Bonsai 27B |
| Lifecycle | active | active |
| Released | Unknown | 2026-07-04 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 128K | 262K |
| Total parameters | Unknown | 27B |
| Active parameters | Unknown | Unknown |
| License | Unknown | apache-2.0 |
| Open weights | No | Yes |
| API available | Yes | No |
| Self-hostable | No | Yes |
| Provider access | Openrouter (Standard), Perplexity (Standard) | Unknown |
| Capabilities | chat, citations, reasoning, search | chat, generation, reasoning, tools, vision |
| Base model | Unknown | Qwen3.6 27B |
| Effective bit width | Unknown | 1 bit per weight |
| Language model size | Unknown | 3.53 GiB |
| Weight format | Unknown | Binary Q1_0 |
Sonar Reasoning Pro Capabilities
Bonsai 27B Capabilities
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Primary Evidence
Sources and Freshness
Questions
Sonar Reasoning Pro vs Bonsai 27B FAQs
Is Sonar Reasoning Pro or Bonsai 27B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Sonar Reasoning Pro and Bonsai 27B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Sonar Reasoning Pro or Bonsai 27B?+
Only Sonar Reasoning Pro has a directly sourced input price: $2.00 per million tokens. Only Sonar Reasoning Pro has a directly sourced output price: $8.00 per million tokens.
Which has a larger context window, Sonar Reasoning Pro or Bonsai 27B?+
Bonsai 27B has the larger sourced context window. Sonar Reasoning Pro supports 128K and Bonsai 27B supports 262K.
Which performs better in benchmarks, Sonar Reasoning Pro or Bonsai 27B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Sonar Reasoning Pro or Bonsai 27B be self-hosted?+
Bonsai 27B is the only model in this pair currently marked as self-hostable. Sonar Reasoning Pro is not marked open weight; Bonsai 27B is open weight.
Can Sonar Reasoning Pro and Bonsai 27B understand images?+
Sonar Reasoning Pro is not documented with image input; Bonsai 27B is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Sonar Reasoning Pro or Bonsai 27B?+
Neither has a larger sourced maximum output. Sonar Reasoning Pro is — and Bonsai 27B is —.
Do Sonar Reasoning Pro and Bonsai 27B support reasoning and tool use?+
Sonar Reasoning Pro: reasoning. Bonsai 27B: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Sonar Reasoning Pro or Bonsai 27B?+
Sonar Reasoning Pro has 2 sourced provider routes; Bonsai 27B has 0, so Sonar Reasoning Pro has broader tracked availability.
Which offers better value, Sonar Reasoning Pro or Bonsai 27B?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.