Sao Khuê 2025Ranked #1 software developer in Vietnam on Clutch - 4.9/5 from 50+ verified reviews.See the proof

AI Agent Development Services

Most AI agents die between the demo and production. We build the ones that ship.

AI agent development is the engineering of LLM-powered systems that plan multi-step work, call tools and APIs, hold memory across turns, and correct themselves without a human prompting each step. A chatbot answers. An agent acts. InApps designs, hardens and operates custom AI agents on LangGraph, CrewAI, AutoGen and the Model Context Protocol, with evals, guardrails and observability built in before launch, not bolted on after.

45 minutes with an AI engineer. No deck, no pitch.

4.9/5Clutch · 50+ reviews
750+Projects since 2016
100+Engineers
85%+Multi-year retention
InApps engineers at work in the Ho Chi Minh City office

Trusted by engineering teams across 15+ countries - from startups to Fortune 500.

KFC Jollibee Prudential Techcombank Lotte MM Mega Market Fahasa ADM WorkPac Future Processing HVS Annam Pegas Baiond Fram Simban TS SG

Gartner expects 40% of agentic AI projects
to be scrapped by 2027

Here is what kills them. And what we do instead.

01

The demo nobody could trust

It worked in the meeting. Then someone asked how often it is right, and no one had a number. Without an eval suite there is no threshold to clear, so the agent never gets permission to touch a real customer.

What we do:  we write the eval suite before we write the agent. Go-live is an accuracy number you approve, not a demo you liked.

02

The integration that was faked

The prototype read a spreadsheet. Production needs your CRM, your ERP, your auth, your rate limits and your audit trail. That gap is where most of the real engineering hides, and where most PoCs quietly stop.

What we do: real systems, real data, week two. Scoped service accounts and least-privilege tokens from the first commit.

03

The team that left

An agency shipped it and moved on. Two months later the model version changed, token cost doubled, accuracy drifted, and nobody in the building can read the graph.

What we do: your pod stays. Same engineers, your Slack, still tuning it in month twelve. This is what we have done since 2016.

End-to-end AI agent
development services

Single-purpose autonomous agents

One job, done reliably, thousands of times a day. Long-term memory on a vector store, answers grounded on your documents through retrieval so the agent cites a source instead of inventing one.

LangGraphRAGpgvectorQdrantPineconeWeaviate

Multi-agent systems

A planner that decomposes the goal, executors that do the work, a critic that checks it. Explicit handoffs, shared state, deterministic checkpoints you can replay when something goes wrong.

LangGraphCrewAIAutoGenSemantic Kernel

Tool-calling and MCP integration

The agent acts inside the stack you already run  Salesforce, SAP, Jira, Zendesk, Postgres, your internal REST endpoints. Every call runs through a scoped service account and lands in an audit log.

Model Context ProtocolRESTSQLLlamaIndexwebhooks

AgentOps: evals, guardrails, observability

Accuracy scored per release against your real cases. Token cost and latency tracked per task. Human approval on anything irreversible. One-click rollback to the last version that worked.

LangSmithNeMo GuardrailsOpenTelemetryHITLCI/CD

LangGraph vs CrewAI vs AutoGen
which framework for your use case?

LangGraph, CrewAI, AutoGen and a hand-built state machine compared
CriterionLangGraphCrewAIAutoGenNo framework
Control modelGraph - cyclic state machineRole-playing crew, sequential or hierarchicalConversational, event-drivenHand-built state machine
ControllabilityHighest. State persistence, checkpoints, replay, human-in-the-loopMedium. Collaboration by roleHigh. Strong on complex multi-turn dialogueAbsolute. No abstraction between you and the model
Best forRegulated or auditable workflows that must be deterministicResearch, content, chained operational workConversational simulation, code generationSub-200ms latency budgets, strict compliance
Build effortMedium to highLow to mediumMediumHigh
Where it hurtsVerbose graph code for jobs that are actually simpleHard to make deterministic when you need an audit trailLoops can run long, and long loops cost moneyYou maintain every part of it, forever

Our default is LangGraph when the workflow has to be auditable, CrewAI when time-to-first-version beats tight control, and no framework at all when the latency budget is under a few hundred milliseconds. We will tell you which one before you sign anything including when the answer is that you do not need an agent.

How much does custom AI
agent development cost?

Between $8,000 and $150,000+, depending on how many systems the agent has to touch. Here is the breakdown.

Awaiting sign-off — indicative only, not a quoted rate card

Build cost and time to production, by scope

Indicative build cost and timeline by scope — figures awaiting sign-off
TierBudgetTimelineScope
Proof of concept$8,000 – $20,0002–4 weeksOne agent, single tool call, one internal data source over RAG. Ends in a feasibility verdict, not a maybe.
Production workflow$25,000 – $60,0006–8 weeksTwo to four collaborating agents, layered memory, three to five system integrations across CRM or ERP, eval suite, admin dashboard.
Enterprise autonomous system$70,000 – $150,000+10–16 weeksMulti-agent orchestration, private VPC or on-prem, compliance review, full AgentOps and CI/CD.

What moves the number

How many systems it touches.

Two integrations is a week. Nine is a month, because nine means nine sets of auth, rate limits and edge cases.

How high the accuracy bar is.

85% is a prompt and a good retriever. 99% is evals, fallback logic and a human in the loop and that gap is most of the budget.

Where it runs.

A shared model API is cheapest. Your own VPC costs more. Air-gapped on-prem with open-weight models costs the most, and sometimes your regulator has already decided this for you.

Timeline — 4 phases

Stage 01
Weeks 1–2

Discovery and scoping

Use-case scoring, data audit, feasibility analysis, target architecture.

You get: an architecture and scope document.

Stage 02
Weeks 2–3

Prototype and eval

Agent graph, tool integrations, eval suite, grounding on your real data.

You get: a live demo on your data, not on a sample.

Stage 03
Weeks 4–5

Hardening

Guardrails, approval gates, observability, cost optimisation, security review.

You get: a production-ready pipeline.

Stage 04
Week 6+

Deploy and operate

Rollout, monitoring dashboards, runbooks, handover, ongoing tuning.

You get: it running in production, and the pod that keeps it there.

Enterprise AI agents
where they pay for themselves first

Six places we see payback inside a quarter.

Six enterprise AI agent use cases, what the agent does and where it escalates
Use caseWhat the agent doesWhere it stops
Support triageReads the ticket, pulls order and account context, resolves or drafts the reply, tags and routes the rest.Refunds, cancellations, anything a customer could dispute.
Document and claims processingExtracts structured fields from PDFs, invoices, contracts and forms, validates them against your rules, writes to the system of record.Any record that fails validation twice.
Internal knowledgeAnswers over Confluence, Notion, tickets and code with a citation, so the answer is checkable.Questions where retrieval confidence drops below threshold.
Sales and CRM hygieneResearches accounts, enriches records, drafts outreach, keeps the pipeline clean without an SDR doing data entry.Anything that sends to a prospect unreviewed.
Finance operationsReconciliation, exception handling, anomaly flagging with the evidence attached.Anything that moves money. Always a human signature.
Supply chain exceptionsWatches for the late shipment or the stockout, works the playbook, drafts the customer note.The commercial judgement call. It escalates with options.

A support agent we built now handles 80% of inbound tickets without a human. First response went from four hours to thirty seconds.

The five questions
your security team will ask

Where does our data go?

Your VPC, your region, or fully air-gapped on-premise with open-weight models. No client data is used to train anything, ever not ours, not a vendor's.

What can the agent act as?

A scoped service account with least-privilege access to exactly the tools it needs. Every call it makes is logged with the input, the output and the decision that led there.

What stops it doing something stupid?

Deterministic guardrails on the output, human approval gates on anything irreversible, and confidence thresholds that route the uncertain case to a person instead of guessing at it.

What certifications do you hold?

ISO 27001:2022 certified. GDPR-aligned delivery. Where your contract requires SOC 2 or HIPAA controls, we build to them and document the mapping.

Who owns the code and the prompts?

You do. 100%, from day one, in the contract agent code, prompt and graph definitions, eval suite, infrastructure as code. Nothing is locked to our accounts.

An AI agent development company
that is still here in month twelve

The pod stays after launch

The same engineers who built it keep running it. Model upgrades, prompt tuning, cost control, eval maintenance as your data shifts. This is the offshore development centre model we have run since 2016, pointed at agents.

You talk to the engineers

No account manager between you and the person writing the graph. Your Slack, your standups, your code reviews.

We ship the eval suite first

Go-live is an accuracy number you sign off on. Not a demo that went well in a meeting.

Senior only

Engineers who have shipped production LLM systems before. Nobody is learning the framework on your budget.

4–6 wksTeam onboarded
750+Projects delivered
10+Years in business
85%+Multi-year retention
15+Countries served

Start with a feasibility review
not a contract

Awaiting sign-off — offer terms not confirmed

AI Agent Feasibility Review  five business days, no fee.

You bring the workflow you want automated. We come back with a use-case score, a data-readiness check, a target architecture, a build estimate with a real range, and a straight go or no-go. If the answer is that you do not need an agent, we will say so in writing.

Book the feasibility review

45 minutes to scope it. You will speak to an AI engineer, not a salesperson.

Frequently asked questions
about AI agent development

What is the difference between an AI chatbot and an AI agent?
A chatbot answers. An agent acts. A chatbot returns text from a single turn of retrieval; an agent decomposes a goal into steps, calls tools and APIs to execute them, checks its own output, and retries until the goal is met without a human prompting each step. The difference shows up in the failure mode: a bad chatbot gives a wrong answer, a bad agent takes a wrong action. That is why every agent we ship has guardrails and an approval gate on anything irreversible.
How much does it cost to build a custom AI agent?
Between $8,000 and $150,000+. A single-purpose proof of concept with one data source runs $8,000–$20,000 over two to four weeks. A two-to-four agent workflow wired into your CRM or ERP runs $25,000–$60,000 over six to eight weeks. A multi-agent system in your own VPC with a compliance review runs $70,000–$150,000+ over ten to sixteen weeks. Three things move the number: how many systems the agent must touch, how high the accuracy bar is, and whether it runs on a shared model API or your own infrastructure.
How long does it take to get an AI agent into production?
Four to twelve weeks. A single agent with two or three tool integrations reaches production in about four weeks. Multi-agent systems with custom infrastructure take ten to twelve. Either way you see a working demo on your real data by week three before the expensive part starts.
Do we need training data or a fine-tuned model?
Usually neither. Most agents we build run on a foundation model GPT, Claude, Gemini grounded on your data through retrieval, not training. We fine-tune only when an off-the-shelf model cannot hit your accuracy bar, and we will tell you at the feasibility stage whether that is likely. What you do need is data the agent can reach: an API, a database, or a document store.
LangGraph, CrewAI or AutoGen which should we use?
LangGraph when the workflow has to be auditable and deterministic. CrewAI when time-to-first-version matters more than tight control. AutoGen when the problem is conversational or involves code generation. And no framework at all when your latency budget is under a few hundred milliseconds a hand-built state machine beats an abstraction layer there. The comparison table above breaks down where each one hurts.
What happens when the agent gets it wrong?
You find out before your customers do. Every agent ships with an eval suite that scores accuracy on your real cases at each release, a dashboard for latency and token cost per task, human approval gates on high-stakes actions, and rollback to the last known-good version. Confidence thresholds route the uncertain case to a person instead of guessing.
Can the agent run in our own cloud or on-premise?
Yes. Your VPC, your region, or fully air-gapped on-premise with open-weight models. No client data is used to train anything, and every tool call runs through a scoped service account with least-privilege access and a full audit log.
Who owns the code, the prompts and the data?
You do 100%, from day one, written into the contract. That covers the agent code, the prompt and graph definitions, the eval suite and the infrastructure as code. There is no licence to buy back and nothing locked to our accounts.
Can you integrate with our existing systems?
Yes. We connect agents through the Model Context Protocol, REST APIs, SQL databases and native connectors — Salesforce, HubSpot, SAP, Jira, Zendesk, Slack, Notion, Stripe, GitHub. If it has an API or an SDK, we can wire it in. No rip-and-replace.
What happens after launch?
The same engineers keep running it. Every engagement includes thirty days of hypercare, then an ongoing plan: model upgrades, prompt and cost tuning, eval maintenance as your data shifts. This is the part most agencies do not sell and most agents need model behaviour changes underneath you, and an unmaintained agent degrades quietly.

Tell us what you want the agent to do

Two sentences is enough to start.

We will tell you whether it is a four-week build or a four-month one and whether it is worth building at all before you commit to anything.

4.9 / 5 from 50+ verified reviews on Clutch