{"version":"2.1.283","anchor":"disable-prompt-caching-haiku-now-matches-the-configured-haik","canonical_anchor":"disable-prompt-caching-haiku-now-matches-the-configured-haik","heading":"DISABLE_PROMPT_CACHING_HAIKU now matches your configured Haiku model","tier":"use","area":"Elsewhere","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283\/e\/disable-prompt-caching-haiku-now-matches-the-configured-haik","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283","markdown":"### `DISABLE_PROMPT_CACHING_HAIKU` now matches your configured Haiku model\n\n`DISABLE_PROMPT_CACHING_HAIKU` now also turns off caching for any request whose model resolves to the configured Haiku model\n\n**What**\n\nPrompt caching lets the API reuse earlier parts of a conversation to save time and cost. `DISABLE_PROMPT_CACHING_HAIKU` turns it off for requests to Haiku, the small, fast model Claude Code uses for some background work.\n\nThe variable now also turns caching off whenever a request's model resolves to the same model as the default Haiku model. That includes a Haiku model you set with `ANTHROPIC_DEFAULT_HAIKU_MODEL`. The earlier, narrower check still applies alongside this one.\n\n**Why**\n\nSetting the variable should now reliably turn caching off for Haiku calls, whatever exact model ID or date suffix they use.\n\n- Area: Elsewhere\n- Names: `DISABLE_PROMPT_CACHING_HAIKU`\n- Tier: Use it now\n- Useful: 2\/5\n- Signal: 1\/5"}