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fix(model-capabilities): harden canonical alias guardrails

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This commit is contained in:
Ravi Tharuma
2026-03-25 17:13:43 +01:00
parent 8df3a2876a
commit 5043cc21ac
8 changed files with 333 additions and 36 deletions
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src/shared/model-capability-aliases.ts
+49 -30
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@@ -1,10 +1,13 @@
type ExactAliasRule = {
export type ExactAliasRule = {
aliasModelID: string
ruleID: string
canonicalModelID: string
rationale: string
}
type PatternAliasRule = {
export type PatternAliasRule = {
ruleID: string
description: string
match: (normalizedModelID: string) => boolean
canonicalize: (normalizedModelID: string) => string
}
@@ -16,44 +19,52 @@ export type ModelIDAliasResolution = {
ruleID?: string
}
const EXACT_ALIAS_RULES: Record<string, ExactAliasRule> = {
"gpt-5.3-codex-spark": {
ruleID: "gpt-5.3-codex-spark-alias",
canonicalModelID: "gpt-5.3-codex",
},
"gemini-3.1-pro-high": {
ruleID: "gemini-3.1-pro-tier-alias",
canonicalModelID: "gemini-3.1-pro-preview",
},
"gemini-3.1-pro-low": {
ruleID: "gemini-3.1-pro-tier-alias",
canonicalModelID: "gemini-3.1-pro-preview",
},
"gemini-3-pro-high": {
ruleID: "gemini-3-pro-tier-alias",
canonicalModelID: "gemini-3-pro-preview",
},
"gemini-3-pro-low": {
ruleID: "gemini-3-pro-tier-alias",
canonicalModelID: "gemini-3-pro-preview",
},
}
const PATTERN_ALIAS_RULES: ReadonlyArray<PatternAliasRule> = [
const EXACT_ALIAS_RULES: ReadonlyArray<ExactAliasRule> = [
{
ruleID: "anthropic-thinking-suffix",
match: (normalizedModelID) => normalizedModelID.startsWith("claude-") && normalizedModelID.endsWith("-thinking"),
canonicalize: (normalizedModelID) => normalizedModelID.replace(/-thinking$/i, ""),
aliasModelID: "gemini-3.1-pro-high",
ruleID: "gemini-3.1-pro-tier-alias",
canonicalModelID: "gemini-3.1-pro-preview",
rationale: "OmO historically encoded Gemini tier selection in the model name instead of variant metadata.",
},
{
aliasModelID: "gemini-3.1-pro-low",
ruleID: "gemini-3.1-pro-tier-alias",
canonicalModelID: "gemini-3.1-pro-preview",
rationale: "OmO historically encoded Gemini tier selection in the model name instead of variant metadata.",
},
{
aliasModelID: "gemini-3-pro-high",
ruleID: "gemini-3-pro-tier-alias",
canonicalModelID: "gemini-3-pro-preview",
rationale: "Legacy Gemini 3 tier suffixes still need to land on the canonical preview model.",
},
{
aliasModelID: "gemini-3-pro-low",
ruleID: "gemini-3-pro-tier-alias",
canonicalModelID: "gemini-3-pro-preview",
rationale: "Legacy Gemini 3 tier suffixes still need to land on the canonical preview model.",
},
{
aliasModelID: "claude-opus-4-6-thinking",
ruleID: "claude-opus-4-6-thinking-legacy-alias",
canonicalModelID: "claude-opus-4-6",
rationale: "OmO historically used a legacy compatibility suffix before models.dev shipped canonical thinking variants for newer Claude families.",
},
]
const EXACT_ALIAS_RULES_BY_MODEL: Readonly<Record<string, ExactAliasRule>> = Object.fromEntries(
EXACT_ALIAS_RULES.map((rule) => [rule.aliasModelID, rule]),
)
const PATTERN_ALIAS_RULES: ReadonlyArray<PatternAliasRule> = []
function normalizeLookupModelID(modelID: string): string {
return modelID.trim().toLowerCase()
}
export function resolveModelIDAlias(modelID: string): ModelIDAliasResolution {
const normalizedModelID = normalizeLookupModelID(modelID)
const exactRule = EXACT_ALIAS_RULES[normalizedModelID]
const exactRule = EXACT_ALIAS_RULES_BY_MODEL[normalizedModelID]
if (exactRule) {
return {
requestedModelID: normalizedModelID,
@@ -82,3 +93,11 @@ export function resolveModelIDAlias(modelID: string): ModelIDAliasResolution {
source: "canonical",
}
}
export function getExactModelIDAliasRules(): ReadonlyArray<ExactAliasRule> {
return EXACT_ALIAS_RULES
}
export function getPatternModelIDAliasRules(): ReadonlyArray<PatternAliasRule> {
return PATTERN_ALIAS_RULES
}