How are you leveraging multiple AI models from different providers in your daily workflow?

Right now, I use several harnesses simultaneously: Claude Code CLI, Codex CLI, Cursor Agent, Antigravity CLI, Kiro CLI… to make the most of both free and paid quotas. An idea I’ve seen many people use is to have a really strong model handle planning, pass the tasks to cheaper models to implement, and then use another capable model to review the results.

For example, I use Opus 5 for planning, hand it to Gemini Flash 3.7 for implementation, and then pass it to GPT Sol 5.6 for review. The output quality has been quite solid, and it reduces costs in most of the cases.

Back when I first started working with multiple models, I did the handoffs manually: finishing one task, then prompting the next model to get used to the workflow. Eventually, I learned from community discussions and started automating it.

Right now, I’m using orca-cli (installed alongside Orca ADE) to coordinate the workflow across these harnesses. I chose orca-cli because I prefer using the official, first-party harness for each model rather than plugging into third-party harnesses or proxying APIs; plus, I really like Orca’s UI. On a single screen, I can open multiple harness windows side by side and watch each one run.

At this point, most of my AI coding workflow is automated. The human part is down to brainstorming, planning, and human-in-the-loop intervention when a model can't make a decision on its own. The rest, opening the appropriate harness window for implementation or review, is handled automatically by orca-cli, and the Orca Desktop interface keeps everything neat for monitoring them all at once.

I'll put the link to the detailed setup in the comments. Happy to answer anything about it, and if you try it, feedback would be awesome 🤗

I’m still learning as I go and looking for ways to keep the workflow even leaner. I’m not aiming to build an overly complex, do-it-all workflow for every edge case. Plenty of people have already done that, and there’s no shortage of theoretically perfect workflows online. I tend to keep things simple and practical as long as the output is reliable. I can always customize it further depending on each project.

Lately, I’ve also noticed tools like Pi and OMP trending. From what I’ve read, they let you assign models to specific roles and run multiple models concurrently as sub-agents. For now, I still prioritize official first-party harnesses, so I haven't tested them yet, but I’ll probably play around with them soon to see if they fit my needs.

How about you? How are you leveraging multiple AI models from different providers? Feel free to share so I can learn from your setups as well.

PS. This turned out a bit long, so thanks for bearing with me 😅. 100% human-generated while on a business trip, not AI-suggested or ghostwritten 🤣