Protect what is yours
Source code, design documents, specifications, customer data — none of it touches an external AI service.
A secure AI appliance for embedded software development teams
Accelerate development with open-weight LLMs while keeping your code confidential — with Fixstars engineers alongside you from secure setup through team-wide adoption.
Cloud AI is tempting. But your source code, designs, and customer specs can't leave the building.
You need an AI environment built around three pillars — security, performance, and team adoption.
Source code, design documents, specifications, customer data — none of it touches an external AI service.
Running in development isn't enough for production. We optimize AI-generated code to the performance your embedded devices demand.
Not just power users. Policies, training, and operations make AI part of how the team works.
So your embedded team can use AI without code or design data leaving the company, we deliver the whole stack — secure AI infrastructure, coding environments, internal knowledge integration, model selection, and training and adoption.
We'll design a configuration
that fits your environment and security requirements.
Combine AI chat, coding agents, and internal knowledge — and AI shows up across investigation, implementation, review, testing, and maintenance.
Map control logic, drivers, and middleware structures fast.
Surface related specs and past design decisions from your internal documents.
Write and revise C/C++, Python, test code, and build scripts.
Reviews shaped by your coding conventions, design rules, and past bug patterns.
Unit tests, edge cases, log analysis, root-cause investigation.
Bottleneck analysis and improvement proposals for models and code.
We combine open-weight LLM execution environments with closed-model access — sized to your data sensitivity and internal policies.
We build dedicated hardware inside your facility. Code never leaves the premises.
We build and operate dedicated hardware in a partner data center. Less ops on your side.
We build a dedicated VPC environment on a cloud vendor's infrastructure. Lower upfront investment. Start in weeks, not months.
Run the latest closed models — Claude, GPT-5.x, Nova, and others — in your own virtual private cloud. Your data is never used to train someone else's model.
The Model Orchestrator securely routes requests to the appropriate model based on your security policy.
Available AI models can be controlled based on code sensitivity. For example, customer code that cannot be sent to the cloud can be restricted to Internal Local AI only.
Available AI environments, managed by security level
External Cloud AI
Training may be used
External Cloud AI
Not used for training
Internally Managed Cloud AI
(Closed AI via Amazon Bedrock)
Internal Local AI
Tell us your environment and operational policy,
and we'll propose the right configuration.
We raise AI development quality across three dimensions — model selection, output code performance, and organizational knowledge. Starting with model selection: the right model depends on the task, security envelope, and quality bar. We continuously evaluate models and deliver a catalog matched to your work.
Open-weight models have advanced enough to be a practical choice — even on-prem or in closed networks. For work where code can't leave the company, they often perform well enough.
Open/closed-weight LLM benchmark performance
Running an open-weight model as-is may not deliver production-ready performance. Fixstars Vega ships models with performance engineering applied by default.
Time to first token (TTFT P90)
Measured by Fixstars on GLM-5.1 (results on GLM-5.2 forthcoming), 8x NVIDIA H200 GPUs. See the service brief for detailed results.
You don't have to evaluate models from scratch. Our engineers validate each one on real embedded development projects and hand it over with use cases, performance, and licensing already mapped out.
As of July 2026. Available models are updated continuously. GLM-5.2 availability may depend on your hardware configuration.
Different tasks suit different models — spec writing from text alone, E2E testing that needs image input, and so on. You can configure the assignment per agent.
Example model assignment per task
Fixstars Vega's performance-engineering harness packages more than 20 years of know-how from embedded development projects into a form AI agents can apply. The code it produces matches — and in some projects exceeds — the optimization work of veteran engineers.
General performance optimization — automatic rewriting for CPU-GPU sync reduction, memory layout, torch.compile, and more.
TensorRT acceleration for PyTorch inference — automatic, functionally equivalent rewrites that avoid graph breaks.
Discover new optimization patterns — the LLM autonomously finds and accumulates novel optimizations not in the existing playbook.
* More capabilities are added on an ongoing basis.
Large-batch processing, prompt pre-caching, TensorRT conversion, etc.
TensorRT conversion, PTQ, custom CUDA kernels as plugins, etc.
bf16 mixed precision, NHWC memory-format fix, torch.compile, etc.
* Measured on Fixstars internal benchmarks. For reference only.
See the full methods and results
behind each speedup in our service brief.
We apply our knowledge-loop methodology to your organization, raising development quality across the team. Throughout the engagement, we build the mechanisms for AI to reference your veterans' know-how and internal standards.
Naming rules, design judgments, quality criteria — the team-wide ground rules.
How routine work — reviews, code analysis, documentation — gets done.
Role assignments, decision criteria, the reasoning behind past decisions.
* At launch, we support the setup. Through the project, your knowledge base grows.
Organize internal know-how and rules into reusable knowledge
Set AI roles and rules to match the project
AI references knowledge to make decisions and suggestions
Code or suggestions in a form ready for real work
Update results and grow the knowledge base
An AI environment isn't done at launch. Hands-on developer workshops, regular model updates, and visibility into usage and cost — we keep AI part of how your team works, day in and day out.
Practical training that helps AI-driven development take root across the whole team.
Sample program
Content is customized to your situation.
When a better-suited model or new version appears, we validate it and update the models we provide. From the admin console, you can check model status, and stop or swap models.
From build-out to adoption — tailored to your situation.
* Timelines vary by project scale and requirements
We map your security requirements, development phase, and existing environment.
Design the infrastructure, models, tooling, and knowledge structure.
Stand up infrastructure, models, tools, and management features.
Run with a small team. Surface issues. Refine operations.
Roll out org-wide. Workshops establish usage patterns. Operations get optimized.
Tell us your current setup and goals.
We'll propose how to get there.
From secure infrastructure to team adoption of AI-driven development.
One-stop support for AI in embedded development.
One PDF: what we deliver, sample configurations, the model list, and operational rules.
Get the briefFor configurations, quotes, and technical questions.
Get in touch