An AI agent development company that ships to production in 2–4 weeks
We build custom AI agents that do real work — qualify leads, answer support tickets, process documents, run internal ops — wired into your CRM, helpdesk and database. Fixed price, published timeline, source code yours on day one.
What you gain working with Horizon
Weeks, not quarters
Most AI agent development companies quote six-month enterprise programmes. We scope one high-value workflow, ship it to production in 2–4 weeks, prove the number, then expand.
Priced up front, publicly
Agents start at €998 with a fixed quote after the scoping call. No day rates, no change-order games — the rarest thing in this category is a firm number before you commit.
Agents that touch your real systems
Tool use against your CRM, helpdesk, database, billing and internal APIs, with permissions and audit logs. An agent that can only chat isn't automation — it's a demo.
Evaluated, observable, maintainable
Prompt evals, regression tests, tracing and cost monitoring ship with every agent, plus a runbook. Your team can debug and extend it in six months without calling us.
Everything you get in the package
- Workflow scoping and ROI model
- Agent architecture and model selection
- Custom tool/API integrations (CRM, helpdesk, DB)
- Evals, guardrails and audit logging
- Deployment, monitoring and cost dashboards
- Handover runbook and team training
AI agent development
Production LLM agents for sales, support and ops — fixed price, 2–4 weeks.
from €998
Request a tailored quoteFrequently asked questions
What does an AI agent development company build?
Custom LLM agents that execute tasks inside your systems: qualifying inbound leads, drafting and sending replies, triaging support tickets, extracting data from documents, updating CRM records, and running multi-step internal workflows with human approval where it matters.
How much does custom AI agent development cost?
Single-workflow agents start at €998 and most production builds land between €2,000 and €12,000 depending on integrations and compliance needs. You get a fixed quote after a free scoping call — before any commitment.
How long does it take to go live?
2–4 weeks for a first production agent, including integrations and evals. Multi-agent systems with several backend integrations typically take 6–8 weeks, shipped in two-week milestones with working software at each one.
Which models and frameworks do you use?
GPT-5, Claude, Gemini and open-weight models depending on cost, latency and data-residency needs. We build on typed, version-controlled code rather than no-code builders, so the agent can be tested, reviewed and scaled.
Do we own the agent and the code?
Yes — full source, prompts, evals and infrastructure config, delivered to your repositories and cloud accounts. No per-seat licence on your own automation, no lock-in.
Book your free consultation
Pick a day and time that suit you. We talk 1:1 about your business — no obligations.
July 2026
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