OpenAI o3 vs Perplexity Sonar Reasoning Pro
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- o3 accepts longer prompts: 200K vs 128K tokens.
- o3 is the newer model (released 2025-04-16).
| o3 | Sonar Reasoning Pro | |
|---|---|---|
| Vendor | OpenAI | Perplexity |
| Released | 2025-04-16 | 2025-03-07 |
| Input / 1M | $2.00 | $2.00 |
| Output / 1M | $8.00 | $8.00 |
| Cached input / 1M | $0.50 | — |
| Blended / 1M (3:1) | $3.50 | $3.50 |
| Context | 200K | 128K |
| Max output | 100K | 115K |
| Accepts | text, image, file | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 1 |
| Cheapest provider, output | $8.00 | $8.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
o3
$240 per month$8.00 per day
Sonar Reasoning Pro
$240 per month$8.00 per day
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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