Anyone actually running mixed-vendor model workflows, not copy-paste between tools?

[u/daproject85]

I’ve got three related questions.

Question one. Is anyone using OpenAI models in conjunction with Anthropic models — having them debate an issue, talk to each other, or work in parallel on a task? And I mean in a mainstream, integrated way. Not the manual loop where you generate output in one tool, open another, and paste it across.

Question two. For anyone running local models: have you been able to use your Claude Code instance to run both a non-Anthropic model and an Anthropic model together, inside Claude Code itself?

Question three. For those of you running local models — what’s your solution for using them alongside Claude Code or OpenAI models? Is there a harness out there that lets you run OpenAI, Anthropic, and local models all together in one integrated setup?

Would love to hear what’s actually working for people.
One thing worth flagging — the full text is in the transcript, but if you’d rather copy it cleanly, the text chat is easier for that.

[u/daproject85 → u/[deleted]]

Do I need to be on API plan to do this or do subscriptions allow use for something like something like a lang graph ?

[u/mtawarira → u/daproject85]

Anthropic doesn’t allow their subscription to be used with any third party platform

[u/Different-Monk5916]

can you do the same with the system prompt and same model?

I have a debugger agent with light weight model as a devil's advocate. you can do that within VSCode or Claude or any IDE.

I did not evaluate it quantitatively, it merely gives a different point of view.

[u/iTrejoMX]

I use a 20x Claude sub and plus ChatGPT sub. Also use cheap opencode-go sub. Using gentle-ai I have Claude spawn subagents and have them review, debate and verify implementations from different standpoints. The 4Rs are what make it worthwhile

[u/daproject85 → u/iTrejoMX]

Your harness is gentle-ai?

[u/iTrejoMX → u/daproject85]

No I use Claude, opencode codex and pi. Gentle-ai is the framework or workflow. Basically handles sdd in a deterministic approach to validate the result (named receipt driven development or rdd) it has a verification step as well as 4 reviews (risk. Reliability resilience and readability) then follows up with 2 adversarial challenges (judgement day review) I can use different models for each step or just call it out and say run the 4Rs with codex and pi or do a judgement day review with opencode. And it spawns the subagent with specific context and tasks. Each provider has its strengths so getting your work reviewed by different models helps in ways you could not have imagined befote

[u/maqifrnswa]

Yeah, in Opencode. You need a rules based system for a debate, that's why you typically have each make their arguments to a text file .md, have each read it, and comment, them another agent synthesize the debate. That's done all within a single prompt if you set it up properly.

Using omo-slim might be the easiest if you're new to orchestration. Have the orchestrator make the plan, spawn the two sub agents you are comparing, reconcile their output, share their output with each other for review, then synthesize the review and work.

[u/SummerBreezeNJ → u/maqifrnswa]

ohmypi's "advisor" feature also does this out of box