A.X Models by SK Telecom

SK TelecomApache 2.0Open source
SK Telecom releases · 2 in the last 12 monthsChangelog →
2 models2025–2026Up to 256K ctx

Last refreshed 2026-09-04. Next refresh: weekly.

Details

ResearcherSK Telecom
LicenseApache 2.0OSI-approved
Commercial useCommercial use: permitted
Models2
Released2025–2026
Max context256K

Links

WebsiteHuggingFace

About

SK Telecom A.X large language model family distributed on Hugging Face.

Decision facts

Best fit
General model comparison
Capability starting point
A.X K2 with 256K context
Lowest tracked input
Not tracked
Closest related family
360Zhinao

Current Variants

Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.

2 in view
A.X K2Current

Use when the workload needs 256K context.

2026-07256K context
A.X K1Current

Use when the workload needs 128K context.

2025-12128K context

Release Timeline

2 release groups
2026-07
1 current
A.X K2
256K context
Current
2025-12
1 current
A.X K1
128K context
Current

Specifications(2 models)

A.X model specifications comparison
ModelReleasedContextParameters
A.X K22026-07256K688B total, 33B active
A.X K12025-12128K519B total, 33B active