Model Releases
the real future of the very best vertical products is Model/Harness Choice + Openness easy to deploy infra is nice (great release from Ant) …
the real future of the very best vertical products is Model/Harness Choice + Openness easy to deploy infra is nice (great release from Ant) but it’s not the lever that matters the most at all to build
the real future of the very best vertical products is Model/Harness Choice + Openness easy to deploy infra is nice (great release from Ant) but it’s not the lever that matters the most at all to build the best agent when building a vertical agent you basically want to pull on every possible product lever to reach the Pareto frontier of Perf/Cost/Latency for your agent I want: - No model lock in, Claude is great but I need to access the best model for my task. If my competitor can have the same arch but access smarter, cheaper, models that I can’t, that’s bad. And the model wars aren’t stopping anytime soon. - Own my data and memory! Production data/evals are the currency of agent self-improvement. I want to be able to move/edit them somewhere else if that will make my agents better. - Finetune open, faster, specialized models on my data. I don’t want frontier intelligence on every task…I just want it on my task for my customers! The on-ramp to that is using your collected data to fine-tune a model for this. You might have to do this multiple times but it will still be cheaper than always routing to a frontier system we’re benefiting from an incredible intelligence battle between the labs and with open models open everything lets you choose when you want to pick a closed model, selfishly optimize for your product and promiscuously try every other choice :) a lot of talk on how 1000 startups just died due to Claude managed agents. I think that’s overblown - the truth is the moat for agentic products has been shifting from infra engineering to domain expertise + data for a while, managed agents is GOOD news if you’re a domain expert …
Related
- what he said 🗣️ the very best agents today obsessively tailor the harness layer around the model I’m looking at you “5 things I learned fro…
- This is why you need model agnostic harnesses
- Open everything 🔥 Open Harness, Model Choice, Open Memory (take it wherever you need), Open Protocols basically we’re in the middle of a mo…
- 'Claude Code isn't magic. The harness layer is just software, and software is something any dev can shape to fit how they want to work.' Che…
- With closed agent platforms like Claude Managed Agents, your agent's memory belongs to them, not you. It's locked behind their API. Agent in…
- Introducing Claude Managed Agents: everything you need to build and deploy agents at scale. It pairs an agent harness tuned for performance …
Source: Harrison Chase (X) | 2026-04-09