AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — OpenAI
GPT-6 Astra is a reasoning model from OpenAI, released in the API on September 3, 2026, which OpenAI describes as its most capable API model for complex reasoning, coding, computer use, research and document creation. It takes text and image input, returns text, and has an April 30, 2026 knowledge cutoff.
Model B — Preferred Networks
PLaMo 3.0 Prime is the flagship of Preferred Networks’ PLaMo family, developed from scratch in Japan and released on June 22, 2026. It is offered as a reasoning model and a faster non-reasoning model, through an API or on-premises, with its context extended from 64K to 256K tokens.
| Property | GPT-6 Astra | PLaMo 3.0 Prime |
|---|---|---|
| Released | Sep 3, 2026 | Jun 22, 2026 |
| Developer | OpenAI | Preferred Networks |
| Type | reasoning | reasoning |
| License | proprietary | proprietary |
| Context window | 1,050,000 | — |
| Parameters | — | — |
| Developer status | — | — |
| Input $/M tokens | $10.00 | — |
| Output $/M tokens | $50.00 | — |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
Programmatic access available at /api/ai/compare?a=gpt-6-astra&b=plamo-3-prime. CORS is open. Citation guidance: /about/editorial-process.