Sonar Reasoning Pro Paid vs 
GPT-3.5 Turbo Paid
Sonar Reasoning Pro vs GPT-3.5 Turbo compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Sonar Reasoning Pro — full profile › · GPT-3.5 Turbo — 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)
$1.5 /M outputManaged API (no infra to run)
Sonar Reasoning Pro vs GPT-3.5 Turbo specs
| Spec | Sonar Reasoning Pro | GPT-3.5 Turbo | Winner |
|---|---|---|---|
| Maker | Perplexity | OpenAI | – |
| Type | Proprietary | Proprietary | – |
| Context window | 128K tokens | 16K tokens | |
| Input price | $2/M | $0.5/M | |
| Output price | $8/M | $1.5/M | |
| Vision / multimodal | Yes | 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 is ~5.3× cheaper than Sonar Reasoning Pro on output tokens ($1.5 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 Reasoning Pro | GPT-3.5 Turbo |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✗ |
| Tool / function calling | ✗ | ✓ |
| 1M+ context window | ✗ | ✗ |
Benchmarks: Sonar Reasoning Pro vs GPT-3.5 Turbo
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Sonar Reasoning Pro and GPT-3.5 Turbo score
| Criterion | Sonar Reasoning Pro | GPT-3.5 Turbo |
|---|---|---|
| Cost-efficiency | 3.5 | 4.5 |
| Context window | 3.5 | 2.0 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 3.5 | 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 Reasoning Pro Paid
Note: Sonar Pro pricing includes Perplexity search pricing. See [details here](https://docs.perplexity.ai/guides/pricing#detailed-pricing-breakdown-for-sonar-reasoning-pro-and-sonar-pro) Sonar Reasoning Pro is a premier reasoning model powe
GPT-3.5 Turbo Paid
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
Frequently asked questions
Sonar Reasoning Pro vs GPT-3.5 Turbo — which is cheaper?
GPT-3.5 Turbo is cheaper on output ($1.5/M vs $8/M).
Which has the larger context window?
Sonar Reasoning Pro offers the larger context window (128K tokens).
Sonar Reasoning Pro vs GPT-3.5 Turbo — which should I pick in 2026?
Choose GPT-3.5 Turbo for the lower output price ($1.5/M vs $8/M). Choose Sonar Reasoning Pro if you need the larger 128K context window.
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