Kimi K2.5 vs Sonar Deep Research
At a Glance
| Compare |  Kimi K2.5Moonshot AI |  Sonar Deep ResearchPerplexity |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.45Deepinfra ↗ · Aug 29, 2026 | $2.00Openrouter ↗ · Sep 22, 2026 |
| Output priceFrom · USD / 1M tokens | $2.25Deepinfra ↗ · Aug 29, 2026 | $8.00Openrouter ↗ · Sep 22, 2026 |
| Context windowMaximum documented tokens | 262K | 128K |
| Model facts checked | Aug 28, 2026View model evidence → | Aug 29, 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 | Kimi-K2.5 | Sonar Deep Research |
|---|---|---|
| Developer | Moonshot AI | Perplexity |
| Family | Kimi K2 5 | Sonar |
| Model | Kimi-K2.5 | Sonar Deep Research |
| Version | Kimi-K2.5 | Sonar Deep Research |
| Lifecycle | active | active |
| Released | 2026-01-27 | Unknown |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 262K | 128K |
| Total parameters | 1T | Unknown |
| Active parameters | 32B | Unknown |
| License | other | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Deepinfra (Standard), Hugging Face (Standard), Openrouter (Standard) | Openrouter (Standard), Perplexity (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, citations, reasoning, research, search |
Kimi K2.5 Capabilities
Sonar Deep Research Capabilities
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Primary Evidence
Sources and Freshness
Questions
Kimi K2.5 vs Sonar Deep Research FAQs
Is Kimi K2.5 or Sonar Deep Research better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Kimi K2.5 and Sonar Deep Research, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Kimi K2.5 or Sonar Deep Research?+
Kimi K2.5 is $0.45 and Sonar Deep Research is $2.00 per million tokens, so Kimi K2.5 is cheaper on this metric. Kimi K2.5 is $2.25 and Sonar Deep Research is $8.00 per million tokens, so Kimi K2.5 is cheaper on this metric.
Which has a larger context window, Kimi K2.5 or Sonar Deep Research?+
Kimi K2.5 has the larger sourced context window. Kimi K2.5 supports 262K and Sonar Deep Research supports 128K.
Which performs better in benchmarks, Kimi K2.5 or Sonar Deep Research?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Kimi K2.5 or Sonar Deep Research be self-hosted?+
Kimi K2.5 is the only model in this pair currently marked as self-hostable. Kimi K2.5 is open weight; Sonar Deep Research is not marked open weight.
Can Kimi K2.5 and Sonar Deep Research understand images?+
Kimi K2.5 is documented with image input; Sonar Deep Research is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Kimi K2.5 or Sonar Deep Research?+
Neither has a larger sourced maximum output. Kimi K2.5 is — and Sonar Deep Research is —.
Do Kimi K2.5 and Sonar Deep Research support reasoning and tool use?+
Kimi K2.5: reasoning, tool calling, and image input. Sonar Deep Research: reasoning. Feature support does not establish relative quality.
Which is available from more inference providers, Kimi K2.5 or Sonar Deep Research?+
Kimi K2.5 has 3 sourced provider routes; Sonar Deep Research has 2, so Kimi K2.5 has broader tracked availability.
Which offers better value, Kimi K2.5 or Sonar Deep Research?+
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.