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 — Moonshot AI
Kimi K3.1 Pro is the first model of Moonshot AI's K3.1 series, launched on October 23, 2026 with a 1M-token context window and a faster Highspeed variant. Moonshot says its full weights will be released by November 4, 2026; until then it is offered only through Kimi's apps and API.
Model B — Reflection AI
Beam is Reflection AI's first open-weight model, a 501B-parameter sparse mixture-of-experts model with 23B active parameters, built for coding, reasoning and agentic work. Announced on October 5, 2026, its weights were released on Hugging Face under Apache 2.0; it takes and returns text only.
| Property | Kimi K3.1 Pro | Beam 1.0 |
|---|---|---|
| Released | Oct 23, 2026 | Oct 16, 2026 |
| Developer | Moonshot AI | Reflection AI |
| Type | llm | llm |
| License | proprietary | open-weight |
| Context window | 1,048,576 | 1,000,000 |
| Parameters | — | 501B total, 23B active (sparse mixture of experts) |
| Developer status | — | — |
| Input $/M tokens | $2.00 | — |
| 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 exclusive capabilities
Programmatic access available at /api/ai/compare?a=kimi-k3-1-pro&b=reflection-beam. CORS is open. Citation guidance: /about/editorial-process.