diff --git a/pages/chat/fact-triggers.ts b/pages/chat/fact-triggers.ts
index 8314d0e..abfe07a 100644
--- a/pages/chat/fact-triggers.ts
+++ b/pages/chat/fact-triggers.ts
@@ -5,7 +5,7 @@ import {
 } from "../../trpc/server.js";
 import { db, type Fact } from "../../database/lowdb.js";
 import type { DraftMessage } from "../../types.js";
-import { openrouter } from "./provider.js";
+import { openrouter, MODEL_NAME } from "./provider.js";
 import { generateObject, generateText, jsonSchema } from "ai";
 
 const factTriggersSystemPrompt = ({
@@ -119,7 +119,7 @@ export const factTriggers = router({
         },
       }) => {
         const factTriggers = await generateObject({
-          model: openrouter("mistralai/mistral-nemo"),
+          model: openrouter(MODEL_NAME),
           messages: [
             {
               role: "system" as const,
@@ -148,9 +148,17 @@ export const factTriggers = router({
                 },
               },
             },
+            required: ["factTriggers"],
           }),
-          // maxSteps: 3,
+          maxRetries: 0,
           // tools: undefined,
+        }).catch((err) => {
+          console.error(err);
+          return {
+            object: {
+              factTriggers: [] as Array<string>,
+            },
+          };
         });
         return factTriggers;
       }
diff --git a/pages/chat/facts.ts b/pages/chat/facts.ts
index 1fc2e88..78bc5ca 100644
--- a/pages/chat/facts.ts
+++ b/pages/chat/facts.ts
@@ -5,7 +5,7 @@ import {
 } from "../../trpc/server.js";
 import { db, type Fact } from "../../database/lowdb.js";
 import type { DraftMessage } from "../../types.js";
-import { openrouter } from "./provider.js";
+import { MODEL_NAME, openrouter } from "./provider.js";
 import { generateObject, generateText, jsonSchema } from "ai";
 
 const factsFromNewMessagesSystemPrompt = ({
@@ -116,7 +116,7 @@ export const facts = router({
         },
       }) => {
         const factsFromUserMessageResponse = await generateObject({
-          model: openrouter("mistralai/mistral-nemo"),
+          model: openrouter(MODEL_NAME),
           messages: [
             {
               role: "system" as const,
@@ -144,8 +144,17 @@ export const facts = router({
                 },
               },
             },
+            required: ["facts"],
           }),
           temperature: 0.4,
+          maxRetries: 0,
+        }).catch((err) => {
+          console.error(err);
+          return {
+            object: {
+              facts: [] as Array<string>,
+            },
+          };
         });
         return factsFromUserMessageResponse;
       }
diff --git a/pages/chat/messages.ts b/pages/chat/messages.ts
index 5fa9134..71175fc 100644
--- a/pages/chat/messages.ts
+++ b/pages/chat/messages.ts
@@ -4,7 +4,7 @@ import {
   createCallerFactory,
 } from "../../trpc/server";
 import { createCaller as createConversationsCaller } from "./conversations.js";
-import { openrouter } from "./provider.js";
+import { MODEL_NAME, openrouter } from "./provider.js";
 import { generateObject, generateText, jsonSchema } from "ai";
 import type { DraftMessage } from "../../types.js";
 
@@ -75,7 +75,7 @@ export const messages = router({
         },
       }) => {
         const runningSummaryResponse = await generateText({
-          model: openrouter("mistralai/mistral-nemo"),
+          model: openrouter(MODEL_NAME),
           messages: [
             {
               role: "system" as const,
diff --git a/pages/chat/provider.ts b/pages/chat/provider.ts
index 201eaf6..a0906c5 100644
--- a/pages/chat/provider.ts
+++ b/pages/chat/provider.ts
@@ -3,3 +3,7 @@ import { env } from "../../server/env.js";
 export const openrouter = createOpenRouter({
   apiKey: env.OPENROUTER_API_KEY,
 });
+
+// export const MODEL_NAME = "mistralai/mistral-nemo";
+// export const MODEL_NAME = "openai/gpt-oss-20b";
+export const MODEL_NAME = "openai/gpt-5-mini";
diff --git a/pages/chat/trpc.ts b/pages/chat/trpc.ts
index c45d693..2d50bc7 100644
--- a/pages/chat/trpc.ts
+++ b/pages/chat/trpc.ts
@@ -22,7 +22,7 @@ import { facts, createCaller as createCallerFacts } from "./facts.js";
 import { createCaller as createCallerMessages } from "./messages.js";
 import { createCaller as createCallerFactTriggers } from "./fact-triggers.js";
 import { factTriggers } from "./fact-triggers.js";
-import { openrouter } from "./provider.js";
+import { MODEL_NAME, openrouter } from "./provider.js";
 
 const factsCaller = createCallerFacts({});
 const messagesCaller = createCallerMessages({});
@@ -99,7 +99,7 @@ export const chat = router({
          * language which this system can execute; usually an interpretted
          * language like Python or JavaScript. */
         const mainResponse = await generateText({
-          model: openrouter("mistralai/mistral-nemo"),
+          model: openrouter(MODEL_NAME),
           messages: [
             previousRunningSummary === ""
               ? {