chore: update model prices to include more providers (#27837)

Adds the full set of supported provider types to
`scripts/aibridgepricesgen` and updates stored model prices.

Notes:
* We need to rename a few keys from models.dev JSON to match our
internal provider types.
* `prices.json` is now marked as generated.

---------

Co-authored-by: Susana Ferreira <susana@coder.com>

.gitattributes

@@ -36,3 +36,6 @@ site/e2e/provisionerGenerated.ts linguist-generated=true
 site/src/api/countriesGenerated.tsx linguist-generated=true
 site/src/api/rbacresourcesGenerated.tsx linguist-generated=true
 site/src/api/typesGenerated.ts linguist-generated=true
+
+# AI Gateway prices
+coderd/aibridge/prices/data/prices.json linguist-generated=true

scripts/aibridgepricesgen/main.go

@@ -27,7 +27,16 @@ import (
 
 // supportedProviders lists the providers we ship prices for. Adding a
 // provider here is enough to include it on the next regeneration.
-var supportedProviders = []string{"anthropic", "openai"}
+var supportedProviders = []string{
+	"anthropic",
+	"azure",
+	"bedrock",
+	"copilot",
+	"google",
+	"openai",
+	"openrouter",
+	"vercel",
+}
 
 // upstreamProvider is the subset of a models.dev per-provider entry we read.
 type upstreamProvider struct {

scripts/aibridgepricesgen/overrides.jq

@@ -30,3 +30,18 @@ end
       | .name = "Claude Mythos 5"
     )
   end
+
+# Mapping of provider names on models.dev to our own names
+# Ref. table definition for ai_provider_type
+# amazon-bedrock -> bedrock
+# github-copilot -> copilot
+| if (has("amazon-bedrock") | not) then
+   error("overrides.jq: amazon-bedrock not present upstream; drop or update the rename")
+else
+  .bedrock = ."amazon-bedrock" | del(."amazon-bedrock")
+end
+| if (has("github-copilot") | not) then
+   error("overrides.jq: github-copilot not present upstream; drop or update the rename")
+else
+  .copilot = ."github-copilot" | del(."github-copilot")
+end