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docs(adr): ADR-030 Frontier 多供應商策略 — Anthropic + Google + OpenRouter
Operation Ollama-First v5.0 / Phase 12 / Phase 7 落地後追認
Phase 7 引入 Anthropic Claude(Opus 4.7 接 Code Review)後,
戰役有 2 家 Frontier 供應商,需明確治理準則:
決策矩陣(與 ADR-028 鎖定 7 場景對齊):
- 場景 #5 Code Review ⭐: Claude Opus 4.7 (Arena Elo 1548)
→ Gemini 2.5 Flash → ElephantAlpha 49B (3 層 fallback)
- 其他 6 場景維持 Gemini 主鏈
Prompt cache 戰術:
- Anthropic 5min ephemeral:Code Review 命中率預估 80%+,省 ~90% 成本
- Google Gemini:隱式 server-side cache,不可預測
預估月成本:~$32 USD
- Claude $10 + Gemini $8 + NIM $5×2 + OpenRouter $3 + Ollama $0.02
新增供應商 SOP:
1. service wrapper 加 feature flag + is_available() 檢查
2. budget 種子 + ai_calls.provider 白名單
3. unit test (fallback 鏈 + cache hit/miss)
4. 獨立 ADR
對齊:
- migration 024(claude in provider 白名單)
- migration 025(claude $10/月 budget 種子)
- ai_call_logger COST_TABLE(claude-opus/sonnet/haiku 三模型)
- services/anthropic_service.py(Phase 7 落地)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03 23:42:36 +08:00
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