LLM Showdown 2025: GPT-class vs Claude 3.5 vs Gemini 2.0 (for SMB workflows)
I’ve run GPT, Claude, and Gemini through real client work. Here’s the model I’d choose for each SMB workflow — and how to test them yourself.
Here’s what I’ve learned after swapping models across real client work. No fanboy stuff — just where each one fits.
The field as it stands
- Claude 3.5: strong writing, reasoning, and instruction following, widely used in enterprise stacks (also appears via Vertex AI for orgs already on Google Cloud). Anthropic, Google Cloud
- Gemini 2.0: deeper integrations with Google apps plus “Deep Research” for web synthesis; handy if your team lives in Google’s world. blog.google, Chrome Unboxed
- GPT-class: still excellent generalist performance and ecosystem depth; most third-party tools assumed it first, then added others.
How I pick for SMB tasks
Pick models by workflow, not headlines. The right fit saves review time — and that’s where the money is.
- Customer emails & proposals → Claude 3.5 edges ahead on tone and following multi-step instructions.
- Research & docs living in Google Drive → Gemini 2.0 saves clicks with native connections, plus its “Deep Research” can do a decent first pass. blog.google
- Integrations & tool ecosystem → GPT-class often has the widest plugin/app coverage.
Costs & speed (the practical bit)
Pricing changes often. What matters most is total flow cost: prompts × frequency × review time. I run a one-week A/B: same tasks, three models, human time included. The cheapest invoice isn’t always the cheapest week.
7-day LLM bake-off (copy this)
- Choose 3 high-volume tasks
- Run each model for a week
- Track human edit minutes, not just API cost
- Keep two winners live for resilience
My rule of thumb
- Start with Claude for customer-facing text.
- Use Gemini if your org is deep in Google and you need web-synthesis.
- Use GPT-class when you need the broadest third-party support or existing automations.
What can change this year
Vendors are racing on “agent” and reasoning features (see recent launches and event cycles). I reassess quarterly and keep at least two options ready. blog.google, SiliconANGLE
Where to go next
Want a side-by-side for your stack with real costs? Free AI Audit. Or if you already know your lane, we’ll wire it in AI Services.
About The Lost Co
The Lost Co is a Melbourne-based technology company that builds automation, AI tools, and custom software for Australian small and medium businesses. We also build and sell our own software products.