chore: update OpenAPI spec from monorepo (#512)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -18074,7 +18074,7 @@ components:
       example:
         enabled: true
         id: 'pareto-router'
-        min_coding_score: 0.8
+        max_price: 5
         price_source: 'prompt'
       properties:
         enabled:
@@ -18084,15 +18084,21 @@ components:
           enum:
             - 'pareto-router'
           type: 'string'
+        max_price:
+          description: 'Maximum input price in USD per million tokens. When set, quality-tier selection (min_coding_score) is bypassed: the router computes the Pareto frontier over the top coding models and routes to the best-scoring frontier model priced at or below this cap, falling back through cheaper frontier models, then non-frontier models. Enforced against the price source given by price_source. Returns 404 when no candidate satisfies the cap.'
+          example: 5
+          format: 'double'
+          minimum: 0
+          type: 'number'
         min_coding_score:
-          description: 'Minimum coding quality score between 0 and 1. Maps to internal quality tiers: >= 0.66 → high (top coding models), >= 0.33 → medium (strong modern flagships), < 0.33 → low (capable coders above the median). Omit to default to the highest tier (equivalent to >= 0.66).'
+          description: 'Minimum coding quality score between 0 and 1. Maps to internal quality tiers: >= 0.66 → high (top coding models), >= 0.33 → medium (strong modern flagships), < 0.33 → low (capable coders above the median). Omit to default to the highest tier (equivalent to >= 0.66). Not used when max_price is set (price-based selection takes over).'
           example: 0.8
           format: 'double'
           maximum: 1
           minimum: 0
           type: 'number'
         price_source:
-          description: 'Price source for the Pareto frontier cost axis. "prompt" uses catalog list price (endpoint.pricing.prompt). "weighted_avg" uses traffic-weighted effective input price from ClickHouse, falling back to prompt price for models without traffic data. Defaults to "prompt".'
+          description: 'Price source for the Pareto frontier cost axis and for enforcing max_price. "prompt" uses catalog list price (endpoint.pricing.prompt). "weighted_avg" uses traffic-weighted effective input price from ClickHouse, falling back to prompt price for models without traffic data. Defaults to "prompt".'
           enum:
             - 'prompt'
             - 'weighted_avg'