GPT-Live-1 vs K2 Horizon 375B-A23B
K2 Horizon 375B-A23B significantly outperforms across most benchmarks.
OpenAI · Institute of Foundation Models · Updated for 2026
Which is better?
GPT-Live-1 and K2 Horizon 375B-A23B trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
In the 1 individual benchmarks reported for both models, K2 Horizon 375B-A23B wins 1; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-Live-1
- you want the most recent training data — it shipped Sep 2026
Choose K2 Horizon 375B-A23B
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
2 reported for GPT-Live-1 · 18 for K2 Horizon 375B-A23B
GPT-Live-1 outperforms in 0 benchmarks, while K2 Horizon 375B-A23B is better at 1 benchmark (Tau3 Banking).
K2 Horizon 375B-A23B significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Input capabilities
Documented input modalities across available providers
GPT-Live-1 supports multimodal inputs, whereas K2 Horizon 375B-A23B does not.
GPT-Live-1 can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-Live-1
K2 Horizon 375B-A23B
License
Usage and distribution terms
GPT-Live-1 is licensed under a proprietary license, while K2 Horizon 375B-A23B uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-Live-1 was released on 2026-09-10, while K2 Horizon 375B-A23B was released on 2026-09-03.
GPT-Live-1 is 0 month newer than K2 Horizon 375B-A23B.
Sep 10, 2026
1 months ago
1w newerSep 3, 2026
2 months ago
Knowledge Cutoff
When training data ends
GPT-Live-1 has a documented knowledge cutoff of 2025-07-31, while K2 Horizon 375B-A23B's cutoff date is not specified.
We can confirm GPT-Live-1's training data extends to 2025-07-31, but cannot make a direct comparison without K2 Horizon 375B-A23B's cutoff date.
Jul 2025
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Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-Live-1 and K2 Horizon 375B-A23B side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-Live-1 vs K2 Horizon 375B-A23B.