Ox Alpha
#110 in Frontier-SpraakmodelleUnknown · alpha · 2× · tolest 24. Aug. 2026
20
Momentum
Ox Alpha is an anonymous "stealth" AI model that appeared on August 20, 2026 under the provider name "stealth" on OpenRouter and the coding agent OpenCode. The developer remains officially unknown; community analyses suspect a connection to Zhipu AI/GLM, which however has not been confirmed. The model offers a context window of approximately 1 million Token, processes text, image, and video, and is available during the free preview phase via the OpenRouter API as well as OpenCode, Cline, and Hermes Agent. It is not an Open Source model; weights have not been published, and access is exclusively through a hosted API.
Momentum-Verloop
26.05.24.08.
Features
| Key Benchmark (%) | ~80% on a 10-task DeepSWE subset (unverified community test); full 113-task run reported a differing 58.4% |
| Context Window (Tokens) | 1,048,576 tokens, max output 131,072 tokens |
| License | Not open source; no weights released, available only as a hosted API endpoint |
| Multimodality | Accepts text, image, and video as input, outputs text; no audio input |
| Platform | Available via OpenRouter API (model ID stealth/ox-alpha), also OpenCode, Cline, and Hermes Agent |
| Price per 1M Tokens | $0.00 (free during preview period, about one week from August 20, 2026) |
| Release Date | August 20, 2026 (launched on OpenRouter and OpenCode) |