Guides & Blog · 2026-08-01 · eWEB TEC
Last reviewed: 13 Aug 2026
Claude Skills vs Custom GPTs: Which Should an Australian SME Build?
Claude Skills are reusable task packages inside Claude. Custom GPTs are configured assistants inside ChatGPT. Build the one that matches where your team already works — or build both for different jobs.
If you only remember one line: Skills and GPTs both stop staff re-explaining the same business every chat. They are not magic employees and they are not a full workflow by themselves.
What a Custom GPT is
A Custom GPT is ChatGPT with fixed instructions, optional knowledge files and optional Actions (tools). Your team opens that GPT instead of a blank chat. Good for shared FAQ helpers, brand-voice drafting and Q&A over a document pack.
What a Claude Skill is
A Claude Skill packages how to do a job so Claude can apply it consistently — instructions, examples, sometimes files or code. Skills shine when you want portable, repeatable internal workflows in the Claude ecosystem (including more advanced Claude Code setups).
Decision table
- Team lives in ChatGPT → start with one Custom GPT
- Team lives in Claude / wants Skills → start with one Skill for the highest-repeat task
- Need tools + email + Xero → add a workflow (n8n/Make/Zapier), not only a Skill/GPT
- Public website bot → different product; do not confuse it with an internal Skill
What Australian SMEs should build first
Pick one bottleneck you can measure: after-hours enquiries, standard quote drafts, or FAQ triage. Write what “good” looks like with three real examples. Then implement as a GPT or Skill and force human approval on money. Expand only after a fortnight of use.
Common mistakes
- Twenty half-baked assistants instead of one that works
- No owner who reviews bad outputs
- Pasting client data into free personal accounts
- Expecting a Skill to replace ServiceM8 or Xero
eWEB TEC builds both and connects them when needed. See Claude Skills & Custom GPTs and setup.
Side-by-side for an Australian SME
| Question | Claude Skill | Custom GPT |
|---|---|---|
| Where the team works | Claude Team / Claude workspace | ChatGPT Business (was Team) |
| Best first job | Repeatable internal drafts with examples | Shared FAQ helper or brand-voice GPT |
| Knowledge | Instructions, examples, optional files | Instructions plus knowledge files |
| Talks to other software | Needs a workflow (n8n / Make / Zapier) for email and Xero | Optional Actions; still use a workflow for money systems |
| Public website bot | No — different product | No — do not confuse with a site widget |
Build where people already open a tab every day. Switching ecosystems to chase a feature you will use twice is how these projects stall.
You probably do not need both in week one
One assistant that drafts a standard quote is worth more than a Skill and a GPT that both do it badly. Add the second tool when a second team lives in the other product, or when a job is genuinely different (FAQ triage vs long document work).
When to stop building assistants and start a workflow
- The draft has to land in ServiceM8, Tradify or Xero without a copy-paste
- A follow-up email must go on day 2 even if nobody remembers
- A calendar slot has to be held, not just suggested in chat
That is Workflow Build territory. A Skill or GPT teaches the job. A workflow moves the data.
What this costs to run
ChatGPT Business is about US$25 per user per month (about $38 AUD, or about $30 on annual billing) with a two-seat minimum. Claude Team Standard is about US$25–30 per user (about $38–45 AUD) with a five-seat minimum on Team. Figures are USD list × 1.50, ex GST, last checked 13 Aug 2026. Check the vendor checkout — they bill USD. Our Skill Pack is quoted separately.
One assistant that works beats a Skill and a GPT that both sit unused.
FAQ
What do Australian SMEs search when comparing Claude Skills and Custom GPTs?
Common questions include which is better for internal SOPs, which is cheaper at team scale, and whether you need both. Build where the team already works; add the other later if needed.
Should I rebuild my Custom GPT as a Claude Skill?
Only if the team is moving to Claude or the GPT is unused. Port the examples and rules; do not rebuild from memory.
Is a Skill better for quoting than a Custom GPT?
Either can draft a quote if the catalogue and examples are good. The better choice is the product your estimators already open.
Can I use both?
Yes. Many teams keep a Custom GPT for shared ChatGPT work and Claude Skills for deeper internal tasks.
Which is cheaper?
Depends on seats and usage, not the label Skill vs GPT. Pick the ecosystem your staff already open every day.
Do Skills replace automation tools?
No. Skills teach Claude how to do a job. n8n/Make/Zapier still move data between systems.
Want this set up for your team?