$ diff k2-horizon grok-4-6
K2 Horizon vs Grok 4.6
Values come from K2 Horizon and Grok 4.6, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
IfmK2 Horizon
- context
- 524K
- weights
- open
- $/M in
- —
- $/M out
- —
- context
- 500K
- weights
- closed
- $/M in
- $2
- $/M out
- $6
What actually differs
- Context window
- K2 Horizon takes 524K against 500K — modestly more room in a single request.
- Weights
- K2 Horizon publishes weights (Apache 2.0 (weights and code)); Grok 4.6 is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- K2 Horizon shipped 27 days after Grok 4.6 (2026-09-03 vs 2026-08-07).
Full spec
| Attribute | K2 Horizon | Grok 4.6 |
|---|---|---|
| Developer | Ifm | xAI |
| Released | 2026-09-03 | 2026-08-07 |
| Context window | 524,288 (flagship 375B-A23B, native from midtraining onward) | 500,000 tokens |
| Pricing | not recorded | $2/M input · $6/M output; a request reaching 200K tokens re-prices in full at $4.00/M input · $1.00/M cached input · $12.00/M output |
| License | Apache 2.0 (weights and code) | proprietary |
| Availability | Hugging Face (weights, code, checkpoints, training data where redistributable) | API |