Six slugs land in the nous and openrouter curated lists, above the gpt-5.6 line:
openai/gpt-6-astra{,-fast,-flex} and openai/gpt-6-astra-pro{,-fast,-flex}.
Nous Portal serves the tiers as distinct slugs (verified live: each echoes its id, service_tier
default/priority/flex, cost 1x/2x/0.5x). OpenRouter serves them as ENDPOINTS of the base model
(tags openai/fast, openai/flex) and silently routes an unknown suffix to the standard tier at
standard price, so the OpenRouter profile rewrites a tier slug to its base wire model and pins
provider.only to that tier's endpoints (OPENROUTER_ENDPOINT_PINS). The base slug is pinned to
openai/azure/azure-us so default routing never lands on a flex or fast endpoint.
Provider-agnostic metadata: one DEFAULT_CONTEXT_LENGTHS entry (gpt-6-astra: 1,050,000, live on
OpenRouter for both models; substring-matches -pro and the tier suffixes). Pricing is skipped:
both routes bill via official_models_api. Reasoning floor not added (no evidence of long thinks).
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