gen_sf42af43ym

Decision timeline

1. admission+0 ms

   chat request by prin_agent under profile @company/auto (requested "fabric/auto")

2. PRE_ROUTE+7 ms
   allowprompt-injection-heuristictool-loop prompt, session pinned
3. cache+7 ms

   cache bypassed (policy off or non-cacheable request)

4. route+7 ms

   selected anthropic/claude-sonnet via anthropic/acct_anthropic_ent_apse1 on node_sg_dc_01 (C-tier, ap-southeast-1) — objective=balanced, 3 candidates scored, 2 in fallback chain, 1 hard-filter rejection [router router-v3.4.1, policy policy-2026-07-14]

   4 candidates considered3 survived hard filters1 rejectedobjective: balancedfallback chain: 2router-v3.4.1 · policy-2026-07-14

   Hard-filter rejections

   • ep_gpt5nano_openai_use1@node_cf_use1_01context_too_long: 142000 tokens exceeds model context 128000

   Score breakdown — top 3

   #	Candidate	quality	cost	latencyPenalty	cacheSavings	contractValue	shadowPrice	retryRisk	affinityPenalty	Total
   1	anthropic/claude-sonnet via anthropic · node_sg_dc_01 selected	+0.561	-0.270	-0.004	+0.033	+0.021	-0.002	-0.003	+0.300	0.636
   2	openai/gpt-5.2 via openai · node_sg_dc_01	+0.575	-0.169	-0.024	+0.035	0.000	-0.010	-0.003	-0.150	0.240
   3	anthropic/claude-sonnet via amazon-bedrock · node_sg_dc_01	+0.567	-0.297	-0.044	+0.042	+0.020	-0.002	-0.003	-0.150	0.104

5. attempt #1+35 ms

   #1 anthropic · account acct_anthropic_ent_apse1 · node node_sg_dc_01 — succeeded in 1591ms, 10193 prompt-cached tokens

   succeededanthropicacct_anthropic_ent_apse1pool enterprisenode_sg_dc_01Tier C1.59 s

   12K in / 1.4K out / 10K cached

6. settlement+1682 ms

   settled $0.03 — 11667 in / 1399 out / 10193 cached tokens (13066 total)

   Ledger entries

   • reserve$0.05budget:bud_proj_agentsreserve est max for fabric/auto
   • settle$0.03budget:bud_proj_agentssettle actual provider usage
   • refund−$0.02budget:bud_proj_agentsrefund unused reservation

   Cost layers (memo §15.3)

   Provider list

   $0.03

   Contract-adjusted

   $0.03

   Internal charge

   $0.03

   Contract savings

   $0.0023

   contract ct_anthropic_committed (committed)

7. complete+1682 ms

   status=succeeded, model=anthropic/claude-sonnet, 1682ms end-to-end

fabric_metadata

The route-explanation envelope an API caller receives with X-OpenRouter-Metadata: enabled or routing.explain, reconstructed from this generation record.

{
  "requested": "fabric/auto",
  "resolved_model": "anthropic/claude-sonnet",
  "strategy": "balanced",
  "policy_version": "policy-2026-07-14",
  "router_version": "router-v3.4.1",
  "provider": "anthropic",
  "region": "ap-southeast-1",
  "account_pool": "enterprise",
  "node": {
    "ref": "node_sg_dc_01",
    "trust_tier": "C"
  },
  "cache": {
    "response": "BYPASS",
    "prompt_affinity": "HIT",
    "predicted_cached_tokens": 10193
  },
  "guardrails": [
    {
      "stage": "PRE_ROUTE",
      "action": "allow",
      "profile": "gp_baseline",
      "evaluations": 1
    }
  ],
  "attempts": [
    {
      "provider": "anthropic",
      "status": 200
    }
  ],
  "routing_reason": [
    "selected anthropic/claude-sonnet via anthropic (balanced objective, score 0.636)",
    "committed capacity preferred (contract economics)",
    "1 candidate(s) rejected by hard filters"
  ]
}