apex-flash-1
apex-flash-1 is Cantina Security's first open-weights security model, developed in partnership with Yeta as a reinforcement-learning post-train of GLM-5.3-Flash. It is intended for focused investigations involving code reading, tool use, exploit pursuit, and verification against a running target.
What it does
A person can use it as a focused worker for security investigations under the direction of a larger agent.
- Availability
- Checkpoint available on Hugging Face
- Pricing model
- Not established
- Deployment
- Not established
- Privacy
- Not established
- Licence
- MIT
Capability
Modality
Access
Deployment
Pricing
Target user
Evidence
6 claims- The model is a reinforcement-learning post-train of GLM-5.3-Flash for focused investigations. [1]
It is a reinforcement learning post-train of GLM-5.3-Flash for focused investigations: reading code, using tools, pursuing an exploit, and verifying its effect in a running target.
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights. - The model is intended for reading code, using tools, pursuing an exploit, and verifying its effect in a running target. [1]
It is a reinforcement learning post-train of GLM-5.3-Flash for focused investigations: reading code, using tools, pursuing an exploit, and verifying its effect in a running target.
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights. - Cantina Security describes apex-flash-1 as its first open-weights security model. [1]
**apex-flash-1** is Cantina Security's first open-weights security model, developed in partnership with [Yeta](https://yeta.ai/) ([@yetalabs on X](https://x.com/yetalabs)).
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights. - Cantina Security recommends the Codex harness for this checkpoint. [1]
We recommend the Codex harness for this checkpoint.
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights. - The model retains the base model's image-text-to-text architecture. [1]
The checkpoint retains the base model's image-text-to-text architecture.
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights. - The reported evaluation covers text-based security tasks; image and video performance have not been evaluated. [1]
Our reported evaluation covers text-based security tasks; we have not evaluated image or video performance.
Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.
Sources
1
1
Hugging FaceOwner-controlled
https://huggingface.co/cantina-security/apex-flash-1
Retrieved 2026-10-28 00:15 UTC
Verified
Versions
2| Version | Effective | Change | Changed fields | State |
|---|---|---|---|---|
| 2 | 2026-10-03 13:50 UTC | material change | capability, modality, availability | Current |
| 1 | 2026-10-02 14:42 UTC | publication | None | Current |
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Original catalog content is licensed under CC BY 4.0, attributed to wowsuchai. Source quotations and linked content keep their original rights.
