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fix(ai,coding-agent): support anthropic-style cache control for openai compatibles closes #3392

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Mario Zechner
2026-04-20 17:12:05 +02:00
parent 4b2caf43a8
commit 3054fd7a3b
13 changed files with 326 additions and 71 deletions
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packages/ai/CHANGELOG.md
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@@ -8,6 +8,7 @@
- Fixed OpenRouter Meta tests by switching `meta-llama/llama-4-maverick` to `meta-llama/llama-4-scout` to avoid type-check failures from model-catalog drift.
- Fixed direct OpenAI Chat Completions requests to map `sessionId` and `cacheRetention` to OpenAI prompt caching fields, sending `prompt_cache_key` when caching is enabled and `prompt_cache_retention: "24h"` for direct `api.openai.com` requests with long retention ([#3426](https://github.com/badlogic/pi-mono/issues/3426))
- Fixed OpenAI-compatible Chat Completions requests to optionally send aligned `session_id`, `x-client-request-id`, and `x-session-affinity` session-affinity headers from `sessionId` via `compat.sendSessionAffinityHeaders`, enabling cache-affinity routing for backends such as Fireworks ([#3430](https://github.com/badlogic/pi-mono/issues/3430))
- Fixed OpenAI-compatible Chat Completions Anthropic-style prompt caching to apply `cache_control` markers to the system prompt, last tool definition, and last user/assistant text content via `compat.cacheControlFormat`, and enabled that compat for OpenCode/OpenCode Go Qwen 3.5/3.6 Plus models so prompt caching works there too ([#3392](https://github.com/badlogic/pi-mono/issues/3392))
## [0.67.68] - 2026-04-17