A.X K2
SK TelecomOpen weightsReasoningReleased Jul 29, 2026
Overall score
—
Not enough evidence to rank yet
Context window
262K
262,000 tokens
Price per 1M tokens
— in · — out
No price listed
Blended price
—
3:1 input:output tokens
Output speed
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Not measured yet
Category scores
Scores per capability area with the model's rank among ranked models in that category.
- 1Knowledge40.8
Benchmark results (11)
As reported in system cards, papers and public evaluations. Position compares this model with every other model reporting the same benchmark.
Math
| AIME26 | 97.1 | #3 of 29 |
| Apex | 45.8 | #3 of 8 |
| Apex Shortlist | 88.6 | #2 of 4 |
Coding
| LiveCodeBench v6 | 84.0 | #19 of 46 |
| SciCode | 41.0 | #15 of 23 |
Agentic & tool use
| Terminal-Bench 2.1 | 36.0 | #64 of 68 |
Knowledge
| HLE | 27.8 | #49 of 69 |
Instruction following
| IFBench | 75.9 | #21 of 42 |
Pricing by source
USD per 1M tokens.
| Source | Input | Output | Cached in |
|---|---|---|---|
| List price | — | — | — |
SK Telecom publishes A.X K2 under Apache-2.0 for self-hosting and does not publish a first-party hosted token rate for this exact checkpoint. We represent the open-weight row as self-host/free-per-token before infrastructure costs.
Speed
Measured by us through OpenRouter (median of trials).
Not available on OpenRouter, so we cannot measure it yet.