Fast Coding Models Require Smaller Tasks and Continuous Validation
Sarah Chieng of Cerebras argues that fast coding models such as Codex Spark, which she says can generate code at roughly 1,200 tokens per second, require more disciplined developer workflows rather than looser ones. In her account, a 20x speedup over models such as Sonnet and Opus makes old habits — large prompts, unattended agents, delayed validation, and sprawling context — produce technical debt faster than developers can inspect it. Her playbook is to use speed for bounded execution, continuous testing and linting, variant generation, stricter permissions, and external memory that keeps short sessions from losing the plan.
AI Engineer·May 22, 2026·13 min read
