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🚀 For early-stage startups · Your 0→1 tech partner

AI × Web3 Development
for Early-Stage Startups

40+ specialties: L1 chains, Layer2, wallets, smart contracts, dApps, AI agents, LLM fine-tuning… all with transparent fixed pricing at 30% below market. Core team from Coinbase, OpenAI, Google and other top-tier companies.

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✅ 40+ specialties 💰 Transparent pricing · 30% below market 🌍 US/EU team from top tech companies ⚡ MVP in as fast as 2 weeks 🔒 100% source code ownership
💥 All prices = global market average × 70% (based on 2025–2026 public pricing research from DesignRush / Clutch / industry reports; strikethrough = market average)
40+Specialties covered
12Core members, US/EU
2 wksFastest MVP delivery
30%Below market pricing
60 daysFree bug-fix warranty
Web3 Development

Web3 Development Services

From a chain to a dApp, from token launch to listing — one-stop delivery

Infrastructure L1 / L2 / Bridges / Nodes
⛓️

Custom L1 Blockchain

Custom chain on Cosmos SDK / Substrate: consensus, tokenomics, testnet & mainnet launch.
Market $200,000+
$128,000+Save 36%
🧅

Layer2 Rollup Launch

OP Stack / Arbitrum Orbit / ZK Stack chains with sequencer, bridge and block explorer.
Market $100,000+
$68,000+Save 32%
🌉

Cross-Chain Bridge

Lock-mint or liquidity-pool bridges across EVM chains, with security monitoring & alerts.
Market $70,000+
$48,000+Save 31%
🔭

Custom Block Explorer

Branded Blockscout deployment: contract verification, token tracking, full API.
Market $28,000
$18,800+Save 33%
🖥️

Node / RPC Clusters

Full & archive nodes, load-balanced RPC clusters, monitoring and 24/7 alerting.
Market $7,000
$4,800+Save 31%
Contracts & Tokens Smart contracts / TGE / NFT / Audit
📜

Smart Contract Development

ERC-20 / 721 / 1155 and custom business logic in Solidity / Rust, 95%+ test coverage, deployment scripts included.
Market $10,000–25,000
$6,800+Save 32%
🪙

Token Launch + TGE Kit

Token contract + vesting + Merkle airdrop + multisig treasury — everything for TGE day.
Market $14,000
$9,800+Save 30%
🖼️

NFT Minting Platform

Whitelist/public mint site, IPFS metadata, reveal mechanics, royalties, multi-chain support.
Market $19,000
$12,800+Save 33%
🏪

NFT Marketplace

Listings, auctions, bulk trades, collection admin, automatic royalty settlement — OpenSea-grade core features.
Market $55,000–125,000
$38,000+Save 31%
🛡️

Security Audit (Partner Firms)

Formal audit report from a top-tier audit firm; we pre-audit internally first to cut rework costs.
Market $20,000+
$12,800+Save 36%
DeFi & Trading DEX / Lending / Staking / Launchpad
💱

DEX / AMM Exchange

Uniswap V2/V3-style AMM: pools, fee sharing, price oracles, liquidity mining — the full stack.
Market $135,000+
$88,000+Save 35%
🏦

DeFi Lending Protocol

Over-collateralized lending, interest rate models, liquidations, flash loans — Aave-grade architecture.
Market $160,000+
$98,000+Save 39%
🌾

Staking / Yield Farming

Single-sided staking, LP mining, lock-up boosts, tiered reward release — contracts + frontend.
Market $28,000
$18,800+Save 33%
🚀

Launchpad / IDO Platform

Token sales, tiered whitelists, oversubscription refunds, automatic liquidity seeding.
Market $70,000
$48,000+Save 31%
🏛️

RWA Tokenization Platform

Real estate / bonds / carbon credits on-chain: compliant transfer whitelists, dividend distribution, KYC integration.
Market $100,000+
$68,000+Save 32%
Apps & Tooling Wallets / dApps / GameFi / Data
👛

Browser Extension Wallet

MetaMask-grade extension wallet: multi-chain assets, DApp connections, seed phrase & hardware wallet support.
Market $85,000
$58,000+Save 32%
📱

Mobile Wallet App

iOS/Android, MPC or seed-phrase based, built-in swap and DApp browser.
Market $125,000–200,000
$68,000+Save 46%
🎯

dApp MVP Sprint

Wallet connect + core contracts + frontend, live in 2–6 weeks — perfect for fundraising demos.
Market $38,000–80,000
$26,800+Save 29%
🗳️

DAO Governance Platform

Proposals, voting, multisig treasury, on-chain execution — custom build or lean Snapshot + Safe setup.
Market $42,000 (Snapshot setup $5,500)
$28,000+ / lite $3,800Save 33%
🎮

GameFi / Blockchain Games

Game economy + NFT assets + on-chain item trading, Unity/Phaser frontend, high-throughput sidechain setup.
Market $120,000–300,000
$88,000+Save 27%
✈️

Telegram Mini App / Bot

TON Mini Apps, trading/airdrop bots, tap-to-earn games — ride the TG traffic wave fast.
Market $10,000
$6,800+Save 32%
📊

On-Chain Analytics / Subgraph

The Graph indexing + Dune-style dashboards: real-time TVL, volume and user behavior.
Market $13,000
$8,800+Save 32%
🌐

Web3 Marketing Site

Brand site + wallet connect + on-chain data display + multilingual, investor-grade polish.
Market $10,000
$6,800+Save 32%
AI Development

AI Development Services

Built on GPT / Claude / DeepSeek / open-source LLMs — put real AI inside your product

Agents & Conversation Agents / Support bots / Voice
🤖

AI Support Chatbot

Embeds in your site / WeChat / TG, trained on your business data, 24/7 answers + human handoff. Simple FAQ version from $1,800.
Market $15,000–50,000
$9,800+Save 35%
🧠

AI Agent (Tool-Using)

Multi-step reasoning + tool calls (query data, send emails, operate systems), LangGraph architecture, evaluation harness included.
Market $50,000–150,000
$34,800+Save 30%
📞

AI Voice Agent / Outbound Calls

ASR + LLM dialog + lifelike TTS for hotlines, appointment reminders and customer callbacks.
Market $14,000
$9,800+Save 30%
💬

TG / Discord AI Bot

Community management, Q&A and companion bots, multi-group deployment with paid subscriptions.
Market $8,500
$5,800+Save 32%
Models & Data RAG / Fine-tuning / Vision / BI
📚

RAG Knowledge Base

Turn docs/PDFs/web pages into a Q&A knowledge base with vector search and cited sources, for staff or customers.
Market $22,000
$14,800+Save 33%
🎛️

LLM Fine-Tuning (LoRA / Full)

Fine-tune Llama / Qwen / DeepSeek on your data, privately deployed — your style, terminology and workflows baked in.
Market $28,000
$18,800+Save 33%
👁️

Computer Vision

Image recognition, object detection, OCR for receipts, industrial QC — custom-trained models delivered as APIs.
Market $40,000+
$28,000+Save 30%
📈

AI Analytics / Smart BI

Natural-language data queries, auto-generated charts and weekly reports; connects to MySQL/Excel/Lark.
Market $22,000
$14,800+Save 33%
⚙️

Workflow Automation

Custom n8n / Dify / Zapier flows: form → AI processing → CRM/email on autopilot. Kill repetitive work first.
Market $5,500
$3,800+Save 31%
AI Products MVP / SaaS / Apps / AI+Web3
⚡

AI Product MVP

Full product on LLM APIs (frontend + backend + billing), live in 4–8 weeks — ideal for validation and fundraising.
Market $25,000–60,000
$17,800+Save 29%
🎨

AI Image Generation App

Text-to-image, image-to-image, virtual try-on / product photos — private Stable Diffusion / Flux deployment.
Market $19,000
$12,800+Save 33%
✍️

AI Content SaaS

Batch generation of copy, scripts and multilingual marketing content with templates, team collaboration and subscription billing.
Market $25,000
$16,800+Save 33%
📲

AI Mobile App

iOS/Android AI apps (chat, voice, image), including store submission and in-app subscriptions.
Market $50,000+
$34,800+Save 30%
🔗

AI + Web3 On-Chain Agents

Agents that read on-chain data and execute trades: DeFi strategies, copy-trading, on-chain analysis.
Market $55,000+
$38,000+Save 31%
General Services Websites / Design / Ops
🖥️

Marketing Website / Landing Page

High-conversion brand site, responsive + multilingual + basic SEO, delivered in 1–2 weeks.
Market $2,500–8,000
$1,800+Save 28%
🎯

UI/UX Product Design

From user flows to high-fidelity Figma — Web3/AI-native aesthetics.
Market $7,000
$4,800+Save 31%
🔧

Managed Ops (Monthly)

Server monitoring, security patches, backups, small iterations — a dedicated owner.
Market $2,600/mo
$1,800 /moSave 31%
🎓

Technical Advisory (Hourly)

Architecture reviews, tech selection, code audits, fundraising tech due-diligence support.
Market $400/hr
$280 /hrSave 30%

💡 All prices are "from" prices — final fixed quote based on a written scope; no price increases after signing. USDT or fiat accepted, milestone payments (30-40-30).

Bundle Deals

Startup Bundles · Save Even More

Popular combinations packaged together — 15–20% cheaper than buying separately, one team, one delivery

🔥 Most Popular
🚀

Token Launch All-in-One

Web3 marketing site ($6,800) + smart contracts ($6,800) + Token launch & TGE kit ($9,800) + partner-firm security audit ($12,800)

Everything from website to listing-ready, delivered in 6–10 weeks.
Bought separately $36,200
$29,800 bundleSave $6,400
🤖

AI Startup Kickoff

AI product MVP ($17,800) + brand website ($1,800) + workflow automation ($3,800)

Product + storefront + internal efficiency in one go — live in 4–8 weeks, ready for investor demos.
Bought separately $23,400
$18,800 bundleSave $4,600
⚡

Web3 + AI Full-Stack Boost

dApp MVP ($26,800) + AI support chatbot ($9,800) + on-chain analytics dashboard ($8,800)

Ship the product, answer users 24/7, and see your data — the standard seed-stage setup.
Bought separately $45,400
$36,800 bundleSave $8,600

Bundles also support 30-40-30 milestone payments · Need a custom mix? Contact us for a tailored package

Our Team

Core Team

12 core members across the US and Europe, all with hands-on experience at top-tier tech companies
(pseudonyms and cartoon avatars for privacy/non-compete reasons — real faces on video due diligence calls)

Alex K.

Alex K.

Tech Partner / Architect
Ex-Coinbase Senior Backend Engineer, 8 yrs exchange-grade systems
🇺🇸 San Francisco, US
Sarah M.

Sarah M.

Head of AI
Ex-OpenAI Applied Engineer, LLM apps & agent architecture
🇺🇸 New York, US
Daniel R.

Daniel R.

Smart Contract Lead
Ex-Uniswap Labs Protocol Engineer, Solidity security expert
🇩🇪 Berlin, Germany
Ethan P.

Ethan P.

ML Engineer
Ex-DeepMind Researcher, model training & fine-tuning
🇬🇧 London, UK
Lucas B.

Lucas B.

L2 / Infrastructure Lead
Ex-ConsenSys Protocol Engineer, rollups & cross-chain
🇫🇷 Paris, France
Mia S.

Mia S.

Head of Product Design
Ex-Meta Product Designer, led redesigns for 10M+ user products
🇸🇪 Stockholm, Sweden
Oliver T.

Oliver T.

DevOps / SRE
Ex-AWS Cloud Architect, HA clusters & cost optimization
🇮🇪 Dublin, Ireland
Noah F.

Noah F.

Data Engineer
Ex-Tesla Data Platform Engineer, real-time data pipelines
🇺🇸 Austin, US
Ava N.

Ava N.

Project / Delivery Manager
Ex-Revolut Delivery Manager, cross-timezone collaboration veteran
🇱🇹 Vilnius, Lithuania
Sophia W.

Sophia W.

Security Audit Lead
Ex-Chainalysis Security Researcher, contract vulnerability hunter
🇺🇸 Washington DC, US
Emma L.

Emma L.

Full-Stack Lead
Ex-Google Software Engineer, frontend performance & tooling
🇬🇧 Manchester, UK
Liam D.

Liam D.

Frontend Lead
Ex-Stripe Frontend Engineer, payment-grade UX polish
🇳🇱 Amsterdam, Netherlands

Plus 20+ contracted remote engineers across US/EU available per project · coverage from US-East to Europe to Asia, 7×16h response

How We Work

Our Process

From one sentence to a live product — as fast as 2 weeks

1

Free Discovery Call

30 minutes on WeChat/TG about your idea and budget. Written scope + fixed quote within 48 hours.

2

Sign & 30% Deposit

Contract signed, 30% to kick off. USDT or fiat, milestone payments (30-40-30). You own 100% of the code.

3

Build with Weekly Demos

A clickable demo every Friday, full transparency. Dedicated project channel with EU/US engineers + a bilingual PM.

4

Launch + 60-Day Warranty

Final payment on acceptance, we help you deploy. Every project includes 60 days of free bug fixes; monthly ops available.

FAQ

Frequently Asked Questions

Why are you 30% cheaper than market? Is quality compromised?
Two reasons: (1) fully remote — no office or sales-team overhead; (2) we maintain mature codebases for all 40+ specialties, so we never charge you to reinvent wheels. Quality-wise, core members come from Coinbase, OpenAI, Google and peers; contract projects always include internal pre-audit plus an external audit firm report.
Is the quote final? Any mid-project price increases?
Before signing, we break requirements into a feature list written into the contract — a fixed all-in price. If you add new requirements mid-project, we quote them separately and only proceed with your approval.
Who owns the source code and IP?
You do, 100%. Delivery includes complete source code, deployment docs and technical docs, with the GitHub repo created under your own organization.
Not sure which option fits — can we talk first?
Yes, the first consultation is free. We'll recommend the most cost-effective path for your stage (fundraising / PMF validation / scaling) — and we'll openly talk you out of anything that isn't worth building.
Payment methods?
USDT (TRC20/ERC20) or fiat bank transfer. Standard schedule is 30-40-30: signing, mid-project demo, acceptance.
The team is pseudonymous — how do I verify capability?
Before signing we can arrange video due diligence (real faces), show sanitized case studies and deployed contract addresses; for contract work you may also appoint a third-party reviewer you trust.

Turn your idea into a shipped product

Send us one sentence about your project — get a written quote within 48 hours. If it's not worth building, we'll tell you straight.

📩 Get a Free Quote
📮 Email: hello@51kaifa.app 💬 WeChat: 13392476067 ✈️ Telegram: @51kaifa
💬 Quick Contact
WeChat: 13392476067
hello@51kaifa.app

Mention "dev" when adding WeChat — response within 30 min. Or email your requirements for a written quote in 48h.