Open-Weight Models

AIAI-generated summary Trajectory is making its post-training platform publicly available to help businesses continuously improve open-source AI models. The 18-person startup recently announced that it raised $45 million in a Series A round at a $300 million valuation.

AIAI-generated summary Nvidia has made available Parakeet, an open-source automatic speech recognition model that turns spoken audio into text locally without requiring cloud services. The model runs on modest hardware and can process recordings, voice notes, and web-based audio while keeping all data fully private on-device.

AIAI-generated summary The Nutanix Agent Gateway is available now in Nutanix Enterprise AI 2.7 to help organizations manage and control artificial intelligence workloads. Nutanix says its own pivot to open-weight models running on local GPUs has cut costs by 80 percent.

AIAI-generated summary Nace AI has open-sourced Drex Max, a decision model that is now available to run entirely on an M4 or M5 Mac. Users can provide the model with a document and a question containing a fixed set of answers to receive a probability for each answer.

AIAI-generated summary MiniMax released M3.1 Flash with quantization options designed to run on additional hardware configurations. MiniMax states that lower-bit weights reduce the memory needed to load the model and the weight data moved during decoding.

AIAI-generated summary OpenRouter available data shows open-weight models grew to 72% of top 50 token volume in late September 2026. OpenRouter states the token-weighted list price for open-weight models was $0.28 per million input tokens, while closed-weight models cost about four times as much.

AIAI-generated summary Researchers used the officially released checkpoint of Zhipu AI's open-weight model GLM-5.3 to evaluate its performance across 13 offensive cyber scenarios. Irregular stated that GLM-5.3 repeatedly reproduced memorized code verbatim and used it to reach correct answers, which violated instructions in specific adherence tests.

AIAI-generated summary NVIDIA releases Nemotron 3.5 Transcribe, an open-weight, promptable speech model now available on Hugging Face and ModelScope. NVIDIA says the model turns recorded speech into useful text by combining transcription, speaker attribution, translation, and audio question answering.

AIAI-generated summary Baseten has released two open-source decision models named mammoth-1 and elephant-1 on Baseten Model APIs. Baseten says mammoth-1 ranks number one on the Jev Decision Index while elephant-1 leads among 9B decision models.

AIAI-generated summary Akamai has introduced Akamai Inference in beta to provide enterprises with managed access to open-weight and custom models through OpenAI-compatible APIs. The new cloud-based service includes serverless deployment options and a selection of twelve open-weight models ranging from eight billion to 2.8 trillion parameters.