Writer bets on cheaper AI agents with Palmyra X6 and a leaner harness
Writer, the enterprise AI company, has launched Palmyra X6, its new flagship model, alongside an upgraded “harness” built to do something the industry has been curiously reluctant to promise: spend fewer tokens.
The model is a post-training variation on Z.ai’s open-source GLM-5.2, and it is available to Writer’s clients from today.
The pitch arrives at a nervy moment. As agentic AI quietly multiplies the steps, and therefore the tokens, behind every task, enterprise bills have started to sting.
Writer is wagering that a cost backlash has arrived, and it is far from alone in scenting the opportunity, with Baseten raising $1.5bn on the theory that AI’s profits lie in cheap inference.
A harness, in Writer’s telling, is the orchestration layer wrapped around a model, the machinery that decides how a multi-step agent actually executes each request.
Optimise that layer, trimming the redundant calls and bloated context that agents tend...
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