Sunny vs. Construct: build your own AI agent with a computer, or hire one built for solar deal review
By Mass AI · Reviewed
We read Construct's public pages on November 4, 2026. Facts about Construct come only from the sources listed at the end of this page, and anything we could not find there is marked unknown.
Construct is a platform that gives each AI agent its own cloud computer with files, a browser, a terminal, schedules and an email inbox, made for solo founders and small teams, starting at $9 a month. Sunny is Mass AI's AI deal review employee built only for residential solar: it reads each sold deal against your requirements, texts the rep for what is missing, and hands ops a clean package. Pick Construct if you want to build your own agents for many recurring tasks, and pick Sunny if you want solar deal review done to your rules without building it.
Side by side
Every Mass AI comparison page uses the same capability names. Where a feature has a different name or does not match one to one, the notes say so.
| Capability | Sunny | Construct | Notes |
|---|---|---|---|
| Sold deal review | Yes. Reads each sold deal's documents and photos against a minimum intake list plus your own rules, including whether homeowner, property, system and financial details match. | Not a built in job. Whether an agent you build could review solar deal files to your rules is unknown. | Construct is a general platform. Its page does not mention solar. |
| Rep follow up on missing items | Yes. Looks in your connected systems first, then texts the rep for the one thing it needs and keeps after it until the deal is fixed. | Unknown. | Its agents can be reached on the web, Slack, Telegram, Discord or email. Texting reps by iMessage or SMS is not described. |
| Ops approval and handoff | Yes. Ops approves the exact package before it goes out, then Sunny sends it and checks that it arrived. | Unknown. | |
| Homeowner messages | Only after the rep approves the exact recipient, message, purpose and project. | Unknown. | |
| Lead response and booking | No. Sunny starts after the deal is sold. | Unknown. | |
| Design, proposals and contracts | No. Sunny checks the designs, proposals and contracts made in your other tools. | Unknown. | |
| Financing | No. Sunny checks that signed finance documents are in the deal, unless a source confirms a cash deal. | Unknown. | |
| Project tracking after handoff | No. Sunny's job ends when ops approves the handoff and the package arrives. | Unknown. | |
| How reps use it | Reps text Sunny from iMessage or SMS. No login. Ops uses the project view. | You reach an agent from the web, Slack, Telegram, Discord or by emailing its inbox. | |
| Works in your existing software | Works inside your sales and design software. Each rep has their own computer that Sunny uses the way the rep would. Which tools it connects to is confirmed during setup. | Each agent has its own cloud computer with a browser, files and a terminal, plus apps such as Gmail, Notion and HubSpot from an integration catalog and your own MCP tools. | Both have their own computer. Construct gives one to each agent you build. Sunny has one for each rep and uses your software the way that rep would. |
| Memory of how your company works | Yes. Remembers how your company works. The second deal goes faster than the first. | Yes. Memory that you can correct. | |
| Built for residential solar | Yes. Built only for residential solar installers and EPCs. | No. Made for solo founders and small teams in general. | |
| Time per deal review | Under 5 minutes per deal. | Unknown. | |
| Pricing | Not published. Pricing for Sunny is negotiated per EPC. | Published. From $9 a month, with higher plans for more agents. | Its pricing page showed sale prices next to regular prices on November 4, 2026. |
| Setup | Mass AI learns your review rules, connects your tools, and runs Sunny on real deals with your team before anyone relies on it. | Self serve. You create agents and give them their recurring work. |
Where Construct is stronger
- Low cost to start, with published prices from $9 a month.
- Each agent gets its own computer with a browser, files, a terminal and its own email address.
- Works for many kinds of recurring tasks, with schedules you set.
- Several ways to reach your agents: web, Slack, Telegram, Discord and email.
- You can bring your own MCP tools, and its Pro plan lets you use your own model keys.
Where Sunny is stronger
- Sunny comes set up for solar deal review: a minimum intake list for residential deals plus your own rules. On Construct, you build and maintain that job yourself.
- Sunny texts reps by iMessage or SMS and they never log in.
- Sunny brings ops a finished package, waits for ops to approve it, and checks that it arrived.
- Each rep gets a private computer and conversation with Sunny that other reps cannot see.
Who should pick Construct
Built for: Solo founders and small teams with recurring work who want to set up their own AI agents, each with its own computer.
- You are a solo founder or a small team and want to build agents for many recurring tasks.
- You are comfortable writing instructions for an agent and checking its work.
- You want a low monthly price and to start today.
- Deal review is one of many small jobs you want to try automating, not your main bottleneck.
Who should pick Sunny
Built for: residential solar installers and EPCs whose sold deals stall before install because files are missing things or do not match.
- You are a residential solar installer or EPC and sold deals stall before install.
- You want deal review set up to your rules and tested on real deals with your team, not built from scratch.
- Your reps work from their phones and will answer a text.
- You want ops to approve every package before it moves on.
Construct is a place to build your own agents. Sunny is a finished AI employee for one solar job. A team that likes to build could use Construct for other tasks and Sunny for deal review.
Where each option sits
A 2x2 of the options on these pages, placed only where our sources back the place.
- Sunny, under 5 minutes per deal. Reads every document and photo in the sold deal against your rules, texts the rep until it is fixed, and hands ops a package to approve.
- An in-house review team, 3 hours to 4 days per deal by Mass AI's estimate. People read the whole file, chase the rep and own the handoff, at the speed your staffing allows.
- Enerflo. Checks that required items such as a utility bill and signed loan docs are in, shows reps what to fix, sends reminders, and controls when a deal goes to ops. Whether it reads each document to check that details match is unknown, so it sits nearer the middle.
- Wave Sales, not plotted. Its public pages do not describe sold deal review. It answers and books leads.
- Viktor, not plotted. A general AI employee. Its public pages do not describe solar deal review.
- Construct, not plotted. A platform for building your own agents. Its public page does not describe solar deal review.
- Outsourced deal review, not plotted. Where it sits depends on the provider.
Places come from the sourced rows on each comparison page for sold deal review, rep follow up and ops handoff. Checked November 4, 2026.
Questions buyers ask
Could I build my own deal review agent on Construct?
Construct is a general platform, so you would need to write the review rules, connect your tools and check the results yourself. Its public page does not describe a solar deal review agent.
Do both give the agent its own computer?
Yes. Construct gives one to each agent you build, and Sunny has one for each rep that it uses the way that rep would.
Which one is cheaper?
Construct publishes prices starting at $9 a month. Sunny's pricing is negotiated per EPC and includes setup on your real deals.
Who is Construct built for?
Construct says it is for solo founders and small teams with recurring work. Sunny is built only for residential solar installers and EPCs.
Sources and corrections
Last updated: November 4, 2026.
Sources, each read on the date shown: Construct: an AI agent with its own computer (November 4, 2026); Construct pricing (November 4, 2026).
Sunny facts come from Mass AI's own product. See Sunny and other comparisons.
Spot something wrong about Construct? Tell us and we'll fix it.