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 — SK Telecom
A.X K2 is a foundation model from SK Telecom, released on July 29, 2026, built under the Korean government’s Sovereign AI foundation model project and trained from scratch in FP8. SK Telecom says it succeeds the 519B-parameter A.X K1 with stronger math, science, Korean-language and long-context reasoning.
Model B — Tencent
Hy3 is Tencent Hy's hybrid fast-and-slow-thinking Mixture-of-Experts model with 295 billion total and 21 billion active parameters and up to 256K context, released with open weights under Apache 2.0. Tencent says it is used across WorkBuddy/CodeBuddy, Yuanbao, Marvis and ima.
| Property | A.X K2 | Hy3 |
|---|---|---|
| Released | Jul 29, 2026 | Jul 6, 2026 |
| Developer | SK Telecom | Tencent |
| Type | llm | llm |
| License | open-weight | open-weight |
| Context window | 262,144 | — |
| Parameters | 688B total, 33B active (Mixture of Experts) | 295B total, 21B active (MoE), plus 3.8B MTP layer |
| Developer status | — | — |
| Input $/M tokens | — | $0.132 |
| Output $/M tokens | — | $0.528 |
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=ax-k2&b=tencent-hy3. CORS is open. Citation guidance: /about/editorial-process.