OpenAI ships compaction in Responses API, sparking vendor lock-in debate among developers
pvncher · x · 2026-10-06
OpenAI has shipped compaction as a core capability inside its Responses API endpoint.
- Developer pvncher notes compaction is deeply tied to model training and hard to separate out; you can build a custom harness with the Responses API and use the official compaction
- This sparked a debate: are labs using compaction for vendor lock-in? Some argue third-party harnesses using OpenAI or Anthropic models without native compaction should be heavily discounted in evals
- Criticism: labs should focus on models, not locking customers out of the ecosystem
Related event: OpenAI's Built-in Compaction Sparks Vendor Lock-in Debate(10 posts)→
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