Comparison

AI tools for TIA Portal compared: who writes LAD, who tests, who runs offline

Eight ways to put a language model next to a TIA Portal project, from the Siemens agent to open-source MCP servers. One table for what each tool does in the project, one for how you pay and how you connect your own AI.

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Who wrote this

We build one of these tools. Every row links to the product's own public page, checked on 2026-10-02.

Where a vendor does not say something clearly on its own pages, the cell says "Not stated". That means we could not find it, not that the feature is missing. If you make one of these products and a cell is wrong, write to us and we will correct it.

What each tool does in the TIA project

Tool	Writes LAD	Writes SCL	TIA versions	Tests on PLCSIM	WinCC Unified	Compile gate and rollback
Siemens Eigen Engineering Agent	Yes	Yes	V19 to V21	Generates test logic. Running tests on PLCSIM: not stated	JavaScript for dynamic behaviour, VBScript migration to Unified, tag dynamization	Fixes compile and syntax errors. Rollback: not stated
AnyAutomation Studio	Yes: reads, edits and uploads LAD and FBD blocks (release 1.137.0)	Yes	V15 to V21	SCL unit tests on PLCSIM Advanced or a real PLC (Pro+ plan)	WinCC Unified authoring (Pro plan and up)	Reports the compile result and fixes errors; diff and confirmation before import; Git version control
T-IA Connect	Yes	Yes	V17 to V21	Test Harness on PLCSIM Advanced	HMI / WinCC tools: screens, items, HMI tags, alarms, scripts, dynamizations. Unified not named	Compile tools; project and block snapshots with restore; Git-style version control
PLC Copilot	Yes, in Agent mode	Yes, in Agent mode	V17 to V21	Not stated	Not stated	Changes stay in a sandbox until you accept, then are imported and compiled in TIA; AI changes can be reverted
TiaCommander (MCP server)	Yes: LAD and FBD through an XML builder	Yes	V17 to V20, tested on V19	Listed as future work	Listed as future work	Compiles on import; a block is exported first and restored if the import fails; project archives
TiaOpen MCP (MCP server)	Yes: LAD blocks from a JSON flow description	Yes: imports .scl files	V20 Update 4	Not stated	Not stated	Optional compile after import. Rollback: not stated
ChatGPT or Claude in the browser	Not stated	Not stated	No TIA connection	No TIA connection	No TIA connection	No TIA connection
Coilmind	Yes, all block types except F-blocks	Yes	V17 to V21	Yes: LAD and SCL blocks on PLCSIM Advanced V3 to V6	Screens, items, item properties, JS scripts, dynamizations, HMI tags. Does not create HMI devices	Compile gate on every block import; snapshot before every block and screen change, one-click restore

Checked against each product's public pages on 2026-10-02. "Not stated" means the product's own pages do not say.

AI, your own agent and price

The last column but one is about using the tool from an agent you already run, such as Claude Code or Codex. Most MCP servers give that agent raw tools: list blocks, import XML, compile. Coilmind takes the whole task and does the TIA part itself.

Tool	AI included or own key	Local model	Works with your own agent	Price from
Siemens Eigen Engineering Agent	Included in the subscription	Not stated	Not stated	£1,548 per seat per year (UK store), USD 2,100 (US store). Annual term, 1 month free, Industry Organization Account required
AnyAutomation Studio	Your own key or provider login	Yes: Ollama, LM Studio, vLLM, SGLang	MCP server that exposes the project to any AI assistant	CHF 10 a month or CHF 110 a year (Basic). Unit tests need Pro+, CHF 550 a year
T-IA Connect	Your own key or a local model	Yes: Ollama	393 MCP tools your agent calls, plus Workplan for multi-step plans	€10 per 24 hours (personal accounts), or €149 per seat a month
PLC Copilot	Included, as monthly credits	Enterprise plan option	Not stated	30-day free trial, then USD 99 a month (Pro)
TiaCommander (MCP server)	Your MCP client brings the model	Not stated	Yes: MCP tools for Claude Code, Codex CLI, Cursor and others	Free during beta; proprietary licence
TiaOpen MCP (MCP server)	Your MCP client brings the model	Not stated	Yes: MCP tools for VS Code, Cursor, Claude Desktop	Free; MIT licence
ChatGPT or Claude in the browser	Included	No: hosted service	Not applicable	Free tiers; paid plans from USD 20 a month
Coilmind	Included. Your own OpenAI-compatible key is optional on every plan	Yes: Ollama	Takes whole tasks from Codex or Claude Code over local MCP	€29 a month

Checked against each product's public pages on 2026-10-02. Prices as listed, before tax.

Which one fits

Each of these tools is built for a different job. Pick by the work you do most.

›You want official Siemens support, hardware and network configuration, SINAMICS drives or ECAD import: the Eigen Engineering Agent. None of the others document drive or PROFINET work.
›Your projects are on V15 or V16: AnyAutomation Studio documents V15 to V21, the widest range here.
›You want Git, CI/CD pipelines and test reports around the TIA project: T-IA Connect and AnyAutomation Studio both document version control and CI.
›You also work in Rockwell Studio 5000 or AutomationDirect: PLC Copilot documents Siemens, Rockwell and AutomationDirect in one desktop app. For CODESYS, AnyAutomation Studio and T-IA Connect both document support.
›You mostly need to understand and document inherited code: PLC Copilot documents control narratives, I/O lists and FAT/SAT procedures exported as PDF.
›You want the largest raw tool surface for your own agent: T-IA Connect lists 393 MCP tools. For a free start, TiaCommander (free beta) and TiaOpen MCP (MIT licence) are on GitHub.
›You write LAD as well as SCL, want it tested on PLCSIM Advanced, pay monthly, work on V17 or V18, or need a local model on site: Coilmind. AI is included from €29 a month and it also builds WinCC Unified screens.

Sources

Each link below is the vendor's own page. All were opened on 2026-10-02. Coilmind's own facts are on the capability list.

Vendor pages used for the tables

Common questions

Which AI tools for TIA Portal write LAD and not only SCL?

By their own pages: the Eigen Engineering Agent, AnyAutomation Studio, T-IA Connect, PLC Copilot, TiaCommander, TiaOpen MCP and Coilmind. How each one does it differs a lot, from generating whole networks to building a block from a JSON description, so try it on a block you know before you rely on it.

Which ones work offline with a local model?

AnyAutomation Studio and T-IA Connect document local models through Ollama and similar servers. PLC Copilot offers an offline mode on its Enterprise plan. Coilmind runs a local model through Ollama on every plan, with a 14-day offline window before the licence needs a short refresh.

The MCP servers run locally, but whether the model is local depends on the client you connect to them.

Can I use Claude Code or Codex with TIA Portal?

Yes, through an MCP server. T-IA Connect, TiaCommander and TiaOpen MCP give your agent tools such as listing blocks, importing and compiling. Your agent then has to know Openness and LAD XML well enough to use them.

Coilmind works the other way round: your agent hands it the whole task over local MCP, and Coilmind does the TIA part with the same compile gate and snapshots it uses on its own.

Why do some cells say "Not stated"?

Because the vendor does not say it clearly on its own public pages. We do not fill cells from forum posts, third-party blogs or guesses. A product may well do more than its pages say; if you build one of them and a cell is out of date, tell us and we will fix it.

How often is this table checked?

Every quarter, and whenever a vendor tells us something changed. The date of the last check is under each table: 2026-10-02.

Try it on your own project

Fourteen days, no card. Open a project you know and ask for a LAD block you would normally write by hand.