fix: correct MiniMax M2.5 pricing (was ~50x too high) (openclaw#22755) thanks @miloudbelarebia

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: miloudbelarebia <136994453+miloudbelarebia@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

CHANGELOG.md

@@ -46,6 +46,7 @@ Docs: https://docs.openclaw.ai
 - Providers/Copilot: add `claude-sonnet-4.6` and `claude-sonnet-4.5` to the default GitHub Copilot model catalog and add coverage for model-list/definition helpers. (#20270, fixes #20091) Thanks @Clawborn.
 - Auto-reply/WebChat: avoid defaulting inbound runtime channel labels to unrelated providers (for example `whatsapp`) for webchat sessions so channel-specific formatting guidance stays accurate. (#21534) Thanks @lbo728.
 - Status: include persisted `cacheRead`/`cacheWrite` in session summaries so compact `/status` output consistently shows cache hit percentages from real session data.
+- Models/MiniMax: correct default M2.5 API pricing for input/output/cache token costs in onboarding and provider config defaults, fixing inflated usage cost reporting. (#21792)
 - Heartbeat/Cron: restore interval heartbeat behavior so missing `HEARTBEAT.md` no longer suppresses runs (only effectively empty files skip), preserving prompt-driven and tagged-cron execution paths.
 - WhatsApp/Cron/Heartbeat: enforce allowlisted routing for implicit scheduled/system delivery by merging pairing-store + configured `allowFrom` recipients, selecting authorized recipients when last-route context points to a non-allowlisted chat, and preventing heartbeat fan-out to recent unauthorized chats.
 - Heartbeat/Active hours: constrain active-hours `24` sentinel parsing to `24:00` in time validation so invalid values like `24:30` are rejected early. (#21410) thanks @adhitShet.

src/agents/models-config.providers.ts

@@ -53,12 +53,12 @@ const MINIMAX_DEFAULT_VISION_MODEL_ID = "MiniMax-VL-01";
 const MINIMAX_DEFAULT_CONTEXT_WINDOW = 200000;
 const MINIMAX_DEFAULT_MAX_TOKENS = 8192;
 const MINIMAX_OAUTH_PLACEHOLDER = "minimax-oauth";
-// Pricing: MiniMax doesn't publish public rates. Override in models.json for accurate costs.
+// Pricing per 1M tokens (USD) — https://platform.minimaxi.com/document/Price
 const MINIMAX_API_COST = {
-  input: 15,
-  output: 60,
-  cacheRead: 2,
-  cacheWrite: 10,
+  input: 0.3,
+  output: 1.2,
+  cacheRead: 0.03,
+  cacheWrite: 0.12,
 };
 
 type ProviderModelConfig = NonNullable<ProviderConfig["models"]>[number];

src/commands/onboard-auth.models.ts

@@ -42,12 +42,12 @@ export function resolveZaiBaseUrl(endpoint?: string): string {
   }
 }
 
-// Pricing: MiniMax doesn't publish public rates. Override in models.json for accurate costs.
+// Pricing per 1M tokens (USD) — https://platform.minimaxi.com/document/Price
 export const MINIMAX_API_COST = {
-  input: 15,
-  output: 60,
-  cacheRead: 2,
-  cacheWrite: 10,
+  input: 0.3,
+  output: 1.2,
+  cacheRead: 0.03,
+  cacheWrite: 0.12,
 };
 export const MINIMAX_HOSTED_COST = {
   input: 0,