Sonar Deep Research Paid vs 
GPT-3.5 Turbo 16k Paid
Sonar Deep Research vs GPT-3.5 Turbo 16k compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Sonar Deep Research — full profile › · GPT-3.5 Turbo 16k — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$8 /M outputManaged API (no infra to run)
$4 /M outputManaged API (no infra to run)
Sonar Deep Research vs GPT-3.5 Turbo 16k specs
| Spec | Sonar Deep Research | GPT-3.5 Turbo 16k | Winner |
|---|---|---|---|
| Maker | Perplexity | OpenAI | – |
| Type | Proprietary | Proprietary | – |
| Context window | 128K tokens | 16K tokens | |
| Input price | $2/M | $3/M | |
| Output price | $8/M | $4/M | |
| Vision / multimodal | No | No | – |
| Tool / function calling | No | Yes | |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
GPT-3.5 Turbo 16k is ~2.0× cheaper than Sonar Deep Research on output tokens ($4 vs $8 per M tokens).
- You want frontier performance through a managed API
- You need the longer 128K context window
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | Sonar Deep Research | GPT-3.5 Turbo 16k |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✗ | ✗ |
| Tool / function calling | ✗ | ✓ |
| 1M+ context window | ✗ | ✗ |
How Sonar Deep Research and GPT-3.5 Turbo 16k score
| Criterion | Sonar Deep Research | GPT-3.5 Turbo 16k |
|---|---|---|
| Cost-efficiency | 3.5 | 4.0 |
| Context window | 3.5 | 2.0 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 2.0 | 3.5 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
Sonar Deep Research Paid
Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics. It autonomously searches, reads, and evaluates sources, refining its approach as it gathers...
GPT-3.5 Turbo 16k Paid
This model offers four times the context length of gpt-3.5-turbo, allowing it to support approximately 20 pages of text in a single request at a higher cost. Training data: up...
Frequently asked questions
Sonar Deep Research vs GPT-3.5 Turbo 16k — which is cheaper?
GPT-3.5 Turbo 16k is cheaper on output ($4/M vs $8/M).
Which has the larger context window?
Sonar Deep Research offers the larger context window (128K tokens).
Sonar Deep Research vs GPT-3.5 Turbo 16k — which should I pick in 2026?
Choose GPT-3.5 Turbo 16k for the lower output price ($4/M vs $8/M). Choose Sonar Deep Research if you need the larger 128K context window.
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