The autonomous
coding engine
for the AI era.
Stack 3.0 reasons through complex tasks, uses tools autonomously, and explains every decision.
Integrated with the world's leading infrastructure
Everything you need.
Nothing you don't.
Instant Response
Fast inference via Groq's LLaMA 3.1 deployment. Optimized pipeline with sub-second latency.
Secure by Design
API key hashing, input validation, HTTPS enforcement, and secure session management.
Llama-Based Models
Powered by Meta's Llama 3.1. Both cloud and self-hosted options available.
Tool-Use Enabled
Stack can call functions, run code, and interact with external tools and data sources.
High Availability
99.9% uptime SLA for Pro customers. Global CDN for model assets.
Open Source Models
Model weights on HuggingFace (Apache 2.0). Gateway code MIT licensed. Full transparency.
From idea to production in four steps.
Stack 3.0 is not just a model — it's a complete pipeline. Prompt, reason, validate, ship. That simple.
Write a prompt
Describe what you want to build. The more specific, the better the output.
Stack 3.0 reasons
Our model breaks down your request into steps, uses tools, and validates each one.
Review and iterate
Watch the reasoning trace unfold in real-time. Correct the agent at any point.
Deploy to prod
Push the output to your repo, ship it to your infrastructure, done.
One engine. Every workflow.
Stack 3.0 is a general-purpose coding intelligence. Use it for anything from a single bug fix to a full product rewrite.
Code Generation
From function stubs to full CRUD APIs, generated and tested in one shot.
Code Review
Autonomous review of PRs with suggested fixes and explanations.
Debugging
Paste an error, get root cause + fix in under 60 seconds.
Architecture
Design system diagrams, RFC templates, and decision logs on demand.
Refactoring
Bulk modernize legacy code, apply patterns consistently across a repo.
Agentic Pipelines
Chain agents together with custom logic. Loops, conditionals, human-in-the-loop.
Real scores. No marketing.
Stack 3.0 evaluated on HumanEval, ARC-C, MBPP, and MMLU — the same benchmarks that power GPT-4 and Claude evaluations. Numbers are from our latest fine-tune, not cherry-picked from a research paper.
Everything you need.
Nothing you don't.
Tool-Use Enabled
Stack can call functions, run code, and interact with your environment in real-time.
Instant Response
Fast inference for everyone. Optimized pipeline, no cold starts, zero latency.
Native Model Support
Powered by Meta-Llama 3.1. Fast, capable, and always available for production loads.
Always-On Inference
Reliable uptime for every user. No slowdowns or cold starts, even during peak load.
Open Source Core
Model weights on HuggingFace. Gateway code is MIT licensed. Audit freely.
Enterprise Security
Standard web security: input validation, HTTPS, and secure API key handling.
From idea to production
in a single reasoning loop.
Input
Prompt Analysis
Analysis
Cognitive Mapping
Execution
Tool Orchestration
Validation
Self-Correction
Deployment
Production Ship
One engine. Every workflow.
Stack 3.0 is a general-purpose coding intelligence. Use it for anything from a single bug fix to a full product rewrite.
Schema Orchestration
Generate PostgreSQL schemas and Prisma models with automatic relation mapping.
API Gateway Design
Architect a high-performance gateway with rate limiting, auth, and logging.
Infrastructure as Code
Deploy full Kubernetes clusters with Terraform and ArgoCD pipelines.
Developer Trust
Production-grade API with millisecond precision. Built for engineers who demand transparency, predictability, and raw power.
curl -X POST https://api.stack-ai.me/v1/agent/execute \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"agent_id": "stack-core-01",
"input": "Analyze the repository for memory leaks",
"stream": true,
"context": {
"max_tokens": 4096,
"temperature": 0.2
}
}'
{
"id": "run_8x2kL9sP",
"status": "executing",
"trace": [
{
"step": 1,
"action": "scanning_files",
"thought": "Analyzing heap dumps and allocation patterns...",
"timestamp": "2026-04-16T10:12:01Z"
},
{
"step": 2,
"action": "reasoning",
"thought": "Found potential leak in /src/core/socket.ts line 142",
"timestamp": "2026-04-16T10:12:04Z"
}
],
"usage": {
"prompt_tokens": 1240,
"completion_tokens": 412,
"latency_ms": 842
}
}
Zero-Latency Traces
Real-time visibility into the agent's reasoning chain as it executes.
Global Edge Delivery
API endpoints distributed across 40+ regions for minimum TTFB.
Type-Safe SDKs
Full TypeScript definitions for every request and response object.
Scalable Intelligence.
Transparent Pricing.
From independent developers to global enterprises, Stack 3.0 scales with your technical requirements.
Developer
For individuals exploring the engine.
Professional
For power users and professional engineers.
Enterprise
For organizations requiring maximum scale and security.