GPT-6 Astra Pro Paid vs 
Sonar Pro Search Paid
GPT-6 Astra Pro vs Sonar Pro Search compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
GPT-6 Astra Pro — full profile › · Sonar Pro Search — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$50 /M outputManaged API (no infra to run)
$15 /M outputManaged API (no infra to run)
GPT-6 Astra Pro vs Sonar Pro Search specs
| Spec | GPT-6 Astra Pro | Sonar Pro Search | Winner |
|---|---|---|---|
| Maker | OpenAI | Perplexity | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1.1M tokens | 200K tokens | |
| Input price | $10/M | $3/M | |
| Output price | $50/M | $15/M | |
| Vision / multimodal | Yes | Yes | = Tie |
| Tool / function calling | Yes | No | |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Sonar Pro Search is ~3.3× cheaper than GPT-6 Astra Pro on output tokens ($15 vs $50 per M tokens).
- You want frontier performance through a managed API
- You need the longer 1.1M 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 | GPT-6 Astra Pro | Sonar Pro Search |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✗ |
| 1M+ context window | ✓ | ✗ |
How GPT-6 Astra Pro and Sonar Pro Search score
| Criterion | GPT-6 Astra Pro | Sonar Pro Search |
|---|---|---|
| Cost-efficiency | 2.0 | 3.0 |
| Context window | 5.0 | 4.0 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 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
GPT-6 Astra Pro Paid
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://develope
Sonar Pro Search Paid
Exclusively available on the OpenRouter API, Sonar Pro's new Pro Search mode is Perplexity's most advanced agentic search system. It is designed for deeper reasoning and analysis. Pricing is based...
Frequently asked questions
GPT-6 Astra Pro vs Sonar Pro Search — which is cheaper?
Sonar Pro Search is cheaper on output ($15/M vs $50/M).
Which has the larger context window?
GPT-6 Astra Pro offers the larger context window (1.1M tokens).
GPT-6 Astra Pro vs Sonar Pro Search — which should I pick in 2026?
Choose Sonar Pro Search for the lower output price ($15/M vs $50/M). Choose GPT-6 Astra Pro if you need the larger 1.1M context window.
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