

Custom LLMs trained
for your use case
Train and host private, task-specific AI models that are
faster, smarter, and less expensive than the Frontier Labs


Cal AI reduced latency by 3x and improved reliability.
Learn HowTrusted by fast-growing engineering and ML teams
Frontier-level intelligence
at a fraction of the cost
Custom models compress the exact capabilities your tasks require, cutting latency and cost while improving reliability and accuracy.
Up to 95% lower costs than frontier models
Specialized models delivers high accuracy results at substantially lower cost by removing model parameters to focus only on what your workflow requires.


2-3x faster than frontier models
Custom models cut end-to-end latency by more than 50% to serve the most demanding use cases. Tune inference serving with batching, caching, parallelism, and optional speculative decoding for near real-time replies.



Immediate impact
Our customers are already saving millions and delivering delightful low latency experiences to their users.
66%
Reduction in AI vision latency.
95%
Reduction in batch processing costs.
4 weeks from
zero to production
We work hand-in-hand with your engineering team to train, host, and optimize your custom model.


01
Training done for you
Our research team handles everything from model design, evaluations, data curation, GPU procurement, and training from beginning to end to ensure your custom model outperforms your current provider.
02
Inference at Scale
Our proprietary inference infrastructure is optimized to serve production workloads at global scale, tuned to your needs and flexible to match your exact SLAs. Scale from millions to billions of requests without interruption.
03
World-class Support
Around the clock performance monitoring, 24/7 access to our team via email, phone, and a dedicated Slack channel. We offer hands-on support from prototype to production with guaranteed one-hour response time.

Eliminate platform risk
Large labs often quantize or quietly retrain the models they're serving, resulting in unpredictable model performance. Owning your model means reliable performance without platform risk.
No model swaps
No hidden quantization
No vendor lock-in
SOC2 compliant
A custom model for any modality
We train and serve specialized models across text, image, video, audio, and unstructured data
Image & Video Captioning
Caption images or video at an order of magnitude less cost than frontier VLMs, with higher accuracy.
Document Analysis
Understand long, messy documents. Extract summaries, entities, citations, or QA with at low cost with stable latencies.
Structured Extraction
Extract structured data from documents lightning-fast by training a model on your specific data schemas.

Meet with our research team
Schedule a call with our research team. We'll propose a train-and-serve plan that beats your current SLA and unit cost.
Comprehensive AI cloud
In addition to custom models, we offer a range of services that make deployment faster, more reliable, and easier to scale.
Dedicated Inference
Predictable throughput & latency on any open source model, OpenAI-compatible endpoints and private tenancy.
Book DemoServerless Inference API
Start with reliable serverless inference using popular open source models.
Try APIOpen Source Models
Free, specialized open source models we've trained and released to solve specific problems.
View LibraryBatch Inference API
Our internet scale batch API scales to billions of requests at a fraction of the cost of closed source alternatives.
Learn MoreOpen Source Workhorse Models
We've trained and released models that outperform frontier performance on specialized tasks. Deploy them today or let us build something even better for you.


Schematron
Designed for reasoning and complex problem-solving tasks, offering advanced capabilities for structured output generation and complex reasoning.
Model Details

ClipTagger
Designed for reasoning and complex problem-solving tasks, offering advanced capabilities for structured output generation and complex reasoning.
Model Details