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-4o is a multimodal model from OpenAI, first released on May 13, 2024 (snapshot gpt-4o-2024-05-13, which OpenAI shuts down in the API on October 23, 2026). In the API it takes text and image input and returns text.
Model B — Kyutai
Moshi is a speech-text foundation model and full-duplex spoken dialogue framework from Kyutai, released on September 18, 2024. Kyutai describes it as the first real-time full-duplex spoken large language model, with a theoretical latency of 160 ms (200 ms in practice).
| Property | GPT-4o | Moshi |
|---|---|---|
| Released | May 13, 2024 | Sep 18, 2024 |
| Developer | OpenAI | Kyutai |
| Type | multimodal | audio |
| License | proprietary | open-weight |
| Context window | 128,000 | — |
| Parameters | — | 7B (Temporal Transformer) |
| Developer status | Deprecated | — |
| Input $/M tokens | $2.50 | — |
| Output $/M tokens | $10.00 | — |
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.
No shared capabilities
Programmatic access available at /api/ai/compare?a=gpt-4o&b=kyutai-moshi. CORS is open. Citation guidance: /about/editorial-process.