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Agency · LangchainFree audit

AGENCY LANGCHAIN : BUILD AI APPS THAT ACTUALLY WORK

Hack'celeration is a Langchain agency that builds AI-powered applications for startups and companies who want to ship fast without getting lost in the technical complexity.

We develop custom AI solutions: RAG systems that actually answer questions correctly, intelligent agents that automate complex workflows, chatbots connected to your data (CRM, docs, databases), and LLM integrations into your existing products. We handle the full stack—from prompt engineering to vector database setup, from LangGraph orchestration to production deployment.

We work with startups building AI-first products, SaaS companies adding AI features, and teams that started with Langchain but hit technical walls. From early-stage founders to scale-ups processing thousands of queries daily.

Our approach: we ship working systems fast, iterate based on real usage, and don't overcomplicate things. No endless R&D phases. No theoretical AI discussions. Just functional AI that solves your business problem.

Langchain Agency — workflow & automation.
Hack'celeration Agency

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Why partner
with a Langchain agency?

Because a Langchain agency can transform your AI idea into a working product that actually delivers value—without you spending months learning frameworks, debugging chains, and figuring out why your RAG system gives wrong answers.

Langchain is powerful but complex. Chains, agents, memory, retrievers, vector stores, prompt templates—there's a lot to master. And the difference between a demo that works and a production system that handles real users? That's where most projects fail.

Production-ready AI systems → We build apps that work at scale, not just impressive demos. Proper error handling, rate limiting, fallbacks, and monitoring included.

RAG that actually works → We configure vector databases (Pinecone, Weaviate, Chroma), optimize embeddings, and tune retrieval so your AI answers questions correctly—not just confidently.

Smart prompt engineering → We design prompts that get consistent, reliable outputs. No hallucinations, no random behavior, no surprises in production.

Full stack integrations → We connect your AI to your existing tools (CRM, databases, APIs, Slack, your product) so it actually fits into your workflow.

LangSmith monitoring → We set up observability so you can debug issues, track costs, and improve your AI over time.

Whether you're starting from zero or have a broken prototype, we help you ship AI that works.

Our approach

Our methodology
for Langchain Agency.

STEP 1: UNDERSTAND YOUR AI USE CASE

We start by understanding what you actually need AI to do. Not what’s cool or trendy—what solves your problem.

We analyze your use case: Is it a chatbot? A document Q&A system? An autonomous agent? A content generator? Each requires a different architecture.

We identify your data sources and how to connect them. Your CRM, documents, databases, APIs—everything the AI needs to work with.

We define success criteria. What does “working” mean for your use case? Accuracy rate? Response time? Cost per query?

At the end of this step, you have a clear technical spec and we both know exactly what we’re building.

STEP 2: ARCHITECTURE AND DESIGN

We design the system architecture before writing any code. This is where most Langchain projects go wrong.

We choose the right approach: simple chains for straightforward tasks, agents with tools for complex workflows, RAG for knowledge-based systems, or LangGraph for multi-step orchestration.

We select your LLM strategy. GPT-4 for complex reasoning, Claude for long documents, cheaper models for simple tasks. Often a mix.

We design your vector database setup if needed—which embeddings model, chunking strategy, metadata structure, and retrieval approach.

At the end, you have a clear architecture diagram and technical decisions documented.

STEP 3: DEVELOPMENT AND PROMPT ENGINEERING

We build your AI system with production quality from day one.

We develop your chains and agents with proper error handling, retries, and fallbacks. No fragile code that breaks on edge cases.

We engineer prompts that get consistent, reliable outputs. We test systematically, not just “it worked once.”

We set up your vector store, configure embeddings, and optimize retrieval if you’re building a RAG system. We tune until accuracy is actually good.

We integrate with your existing stack—your API, your database, your frontend, your other tools.

You get a working system in a staging environment, ready to test with real data.

STEP 4: TESTING AND OPTIMIZATION

We test your AI system like it’s going to production—because it is.

We run evaluation sets to measure accuracy, not just vibes. Does it answer correctly? Does it handle edge cases? Does it fail gracefully?

We optimize for cost and latency. LLM calls are expensive and slow—we make sure you’re not burning money or frustrating users.

We set up LangSmith monitoring so you can see every request, trace issues, and understand what’s happening inside your AI.

We stress test with realistic load. Your system needs to handle real users, not just demo scenarios.

At the end, you have a battle-tested AI system ready for real users.

STEP 5: DEPLOYMENT AND HANDOFF

We deploy your AI to production and make sure you can run it without us.

We set up your production infrastructure—API endpoints, authentication, rate limiting, scaling configuration.

We create documentation for your team: how the system works, how to modify prompts, how to debug issues, how to add new features.

We train your team on Langchain basics so you’re not dependent on us for every change.

We stay available for questions and offer maintenance packages if you want us to handle ongoing improvements and updates.

You end up with a production AI system, full documentation, and the knowledge to evolve it.

Frequently asked questions

01How much does a Langchain project cost?+
We start from $2,000 for a scoping and architecture phase. A simple chatbot or RAG system: $5,000-15,000. Complex agents with multiple tools and integrations: $15,000-40,000+. The budget depends on complexity, data volume, and how production-ready you need it. We give you a clear quote after understanding your use case—no hidden costs.
02How long does it take to build an AI app with Langchain?+
A simple RAG chatbot: 2-3 weeks. A complex agent system with multiple integrations: 6-10 weeks. It depends on your use case complexity, data preparation needs, and how much iteration the prompts require. We give you a precise timeline after the scoping phase. We can also do faster MVPs if you need to validate an idea quickly.
03What support do you offer after delivery?+
We train your team on the system, provide full technical documentation, and stay available for questions. We also offer maintenance packages if you want us to handle prompt improvements, LLM updates, performance optimization, and new feature development. Most clients start autonomous and come back when they want to add major features.
04Langchain vs building directly with OpenAI API: when to use Langchain?+
Use OpenAI API directly for simple, single-prompt use cases—quick text generation, basic classification. Use Langchain when you need chains (multiple steps), agents (dynamic tool use), RAG (knowledge retrieval), memory (conversation history), or when you might switch LLMs later. Langchain adds complexity but pays off for anything beyond basic API calls. We help you choose the right approach for your specific case.
05Can you integrate Langchain with our existing tools?+
Yes. We connect Langchain apps to CRMs (HubSpot, Salesforce), databases (PostgreSQL, MongoDB, Airtable), automation platforms (Make, n8n, Zapier), communication tools (Slack, Discord), and any system with an API. We also build custom tools for your agents to use. The whole point is AI that fits into your existing workflow, not a separate island.
06How do you handle AI hallucinations and wrong answers?+
Multiple layers. For RAG systems: better retrieval, source citations, confidence scoring. For agents: guardrails, output validation, human-in-the-loop for sensitive actions. For all systems: systematic evaluation, edge case testing, and monitoring. We can't guarantee 100% accuracy—no one can—but we build systems that fail gracefully and give you visibility into when and why errors happen.
07What vector database do you recommend for RAG systems?+
It depends. Pinecone for production-ready, fully managed, easy scaling. Weaviate for hybrid search and self-hosting options. Chroma for quick prototypes and local development. Supabase pgvector if you're already on Postgres. We choose based on your scale, budget, existing infrastructure, and specific retrieval needs. We can also migrate between them if your needs change.
08Can you build autonomous agents that take actions?+
Yes. We build agents with LangGraph that can use tools, make decisions, and execute multi-step workflows. Customer support agents that query databases and update tickets. Research agents that search the web and compile reports. Operations agents that monitor systems and take corrective actions. We always include proper guardrails and human approval for sensitive actions.
09How do you handle LLM costs and optimize for budget?+
We design cost-efficient architectures from the start. Caching for repeated queries. Cheaper models (GPT-3.5, Claude Haiku) for simple tasks, expensive models only when needed. Optimized prompts that use fewer tokens. Batch processing where possible. We set up cost monitoring so you see exactly what you're spending. Most clients are surprised how much we can reduce costs without sacrificing quality.
10Do you also develop custom Python code beyond Langchain?+
Yes. Langchain is our framework but we write custom Python for anything it doesn't cover—data preprocessing, custom integrations, specialized algorithms, API development. We also build FastAPI backends, set up infrastructure, and can integrate with your existing codebase. We're developers first, not just no-code consultants playing with AI tools.
Hack'celeration Agency

Let's build your growth engine.

Free · No commitment · Reply within 1h