GPT-6 Astra Paid vs 
Sonar Pro Search Paid
GPT-6 Astra vs Sonar Pro Search compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
GPT-6 Astra — 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 vs Sonar Pro Search specs
| Spec | GPT-6 Astra | 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 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 | Sonar Pro Search |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✗ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: GPT-6 Astra vs Sonar Pro Search
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How GPT-6 Astra and Sonar Pro Search score
| Criterion | GPT-6 Astra | 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 Paid
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon...
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 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 offers the larger context window (1.1M tokens).
GPT-6 Astra 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 if you need the larger 1.1M context window.
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