fix(pricing): price direct OpenAI/xAI/Anthropic/Google models missing from the snapshot

A direct first-party route whose model is absent from the bundled
official-docs snapshot fell through to the provider's own /models listing,
which carries no prices on api.openai.com or api.x.ai, and recorded the
turn as cost_status=unknown / $0 despite real billed usage (gpt-5-nano on
OpenAI, grok-4.3 on xAI in the live provider canary).

Widen the trusted models.dev fallback from Xiaomi to every pay-per-token
first-party API (openai, xai, anthropic, google, deepseek, xiaomi), keyed
by billing-route provider -> the vendor's API domain. The price applies
only on HTTPS:443 to that domain (or with no base URL, i.e. the provider
default), so relays, downgraded origins, custom endpoints and
subscription routes (xai-oauth, openai-codex) keep their own policy.
Drops the blanket try/except: get_model_info(allow_network=False) reads
only the memory/disk cache and does not raise.

agent/usage_pricing.py

@@ -15,8 +15,16 @@ logger = logging.getLogger(__name__)
 _ZERO = Decimal("0")
 _ONE_MILLION = Decimal("1000000")
 _NOUS_DEFAULT_BASE_URL = "https://inference-api.nousresearch.com/v1"
-_MODELS_DEV_NO_BASE_PROVIDERS = frozenset({"xiaomi"})
-_MODELS_DEV_DIRECT_HOSTS = frozenset({("xiaomi", "xiaomimimo.com")})
+# Pay-per-token first-party APIs whose models.dev rate card is the vendor's own
+# list price, keyed by billing-route provider -> API domain. A model missing from
+# the snapshot below is priced from models.dev only on HTTPS:443 to that domain
+# (or with no base URL, i.e. the provider default): a proxy, relay or custom
+# endpoint serving the same model id may bill differently, and subscription
+# routes (openai-codex, xai-oauth) keep their own policy.
+_MODELS_DEV_DIRECT_HOSTS = {
+    "openai": "openai.com", "xai": "x.ai", "anthropic": "anthropic.com", "google": "googleapis.com",
+    "deepseek": "deepseek.com", "xiaomi": "xiaomimimo.com",
+}
 
 # Below $0.01, render at 4 dp so cheap-model costs never display as $0.00.
 # Sub-cent cost threshold: below $0.01, render at 4 decimal places so the display is non-zero (e.g. $0.0046
@@ -490,27 +498,17 @@ def _pricing_entry_from_metadata(
 
 
 def _models_dev_pricing_entry(route: BillingRoute) -> Optional[PricingEntry]:
-    """Return models.dev pricing only for direct provider routes."""
-    if not route.provider or not route.model:
+    """models.dev list price for a direct first-party route (see ``_MODELS_DEV_DIRECT_HOSTS``)."""
+    domain = _MODELS_DEV_DIRECT_HOSTS.get(route.provider)
+    if not domain or not route.model:
         return None
-    try:
-        from agent.models_dev import get_model_info
-
-        origin = base_url_origin(route.base_url)
-        if (not route.base_url and route.provider not in _MODELS_DEV_NO_BASE_PROVIDERS) or (
-            route.base_url and not (
-                origin[0] == "https"
-                and origin[2] == 443
-                and any(
-                    route.provider == provider and (origin[1] == host or origin[1].endswith("." + host))
-                    for provider, host in _MODELS_DEV_DIRECT_HOSTS
-                )
-            )
-        ):
+    if route.base_url:
+        scheme, host, port = base_url_origin(route.base_url)
+        if (scheme, port) != ("https", 443) or not (host == domain or host.endswith("." + domain)):
             return None
-        model_info = get_model_info(route.provider, route.model)
-    except Exception:
-        return None
+    from agent.models_dev import get_model_info
+
+    model_info = get_model_info(route.provider, route.model)
     if model_info is None or not model_info.has_cost_data():
         return None
     return PricingEntry(
@@ -518,12 +516,11 @@ def _models_dev_pricing_entry(route: BillingRoute) -> Optional[PricingEntry]:
         output_cost_per_million=_to_decimal(model_info.cost_output),
         cache_read_cost_per_million=_to_decimal(model_info.cost_cache_read),
         cache_write_cost_per_million=_to_decimal(model_info.cost_cache_write),
-        source="provider_models_api",
-        source_url="https://models.dev",
-        pricing_version="models.dev",
+        source="provider_models_api", source_url="https://models.dev", pricing_version="models.dev",
         fetched_at=_UTC_NOW(),
     )
 
+
 def get_pricing_entry(
     model_name: str, provider: Optional[str] = None, base_url: Optional[str] = None,
     api_key: Optional[str] = None,

website/docs/user-guide/cli.md

@@ -159,7 +159,7 @@ A persistent status bar sits above the input area, updating in real time:
 | Model name | Current model (truncated if longer than 26 chars) |
 | Token count | Context tokens used / max context window; `~` marks an estimate |
 | Context bar | Visual fill indicator with color-coded thresholds |
-| Cost | Estimated session cost (or `n/a` for unknown/zero-priced models) |
+| Cost | Estimated session cost (or `n/a` for unknown/zero-priced models). Rates come from Hermes' bundled official price table, then the provider's `/models` listing; on a direct first-party API (OpenAI, xAI, Anthropic, Google, DeepSeek, Xiaomi) a model missing from both is priced at the vendor's list price from models.dev. Proxies, relays and custom endpoints serving the same model id stay `n/a` rather than inherit that price. |
 | 🗜️ N | **Context compression count** — how many times the running session has been auto-compressed. Appears once the first compression fires. |
 | ▶ N | **Active background tasks** — how many `/bg` prompts are still running in the current session. Appears whenever at least one task is in flight. |
 | Duration | Elapsed session time |