diff --git a/apps/bubblelab-api/src/config/bubbleflow-generation-prompts.ts b/apps/bubblelab-api/src/config/bubbleflow-generation-prompts.ts
index 2a747560..a3767c5f 100644
--- a/apps/bubblelab-api/src/config/bubbleflow-generation-prompts.ts
+++ b/apps/bubblelab-api/src/config/bubbleflow-generation-prompts.ts
@@ -416,13 +416,13 @@ GOOD EXAMPLE:
 \`\`\`typescript
 // Searches for academic papers related to the topic variable and summarizes each one's key findings.
 // The search behavior is controlled by the task prompt - modify it to focus on specific aspects,
-// add date ranges, or filter by publication type. Currently using gemini-3-pro-preview for thorough
-// multi-step research; switch to gemini-2.5-flash if you need faster results with less depth.
+// add date ranges, or filter by publication type. Currently using gemini-2.5-flash for thorough
+// multi-step research; current default is gemini-2.5-flash for balanced speed and cost.
 // Returns an array of papers (each with title, url, authors, publicationDate, summary, and
 // relevance explanation) plus an overallSummary that synthesizes all findings for downstream use.
 const researchTool = new ResearchAgentTool({
-  task: \`Find research papers about \${topic}...\`,
-  model: 'google/gemini-3-pro-preview',
+  task: \`Find research papers about \${ topic }...\`,
+  model: 'google/gemini-2.5-flash',
   expectedResultSchema: z.object({...})
 });
 
@@ -500,7 +500,7 @@ MODEL SELECTION
 
 TIER 1 - BEST (${RECOMMENDED_MODELS.BEST}):
 Use for: Complex reasoning, tool-calling agents, research-agent-tool, code generation,
-high-iteration tasks (50+), critical accuracy requirements
+high-iteration tasks (50+), critical accuracy requirements (Note: gemini-2.5-flash is now the default for BEST)
 
 TIER 2 - PRO (${RECOMMENDED_MODELS.PRO}, ${RECOMMENDED_MODELS.PRO_ALT}):
 Use for: Multi-step reasoning, strategic planning, complex data analysis
diff --git a/apps/bubblelab-api/src/services/ai/bubbleflow-generator.workflow.ts b/apps/bubblelab-api/src/services/ai/bubbleflow-generator.workflow.ts
index 1b9511d6..0f6d7afd 100644
--- a/apps/bubblelab-api/src/services/ai/bubbleflow-generator.workflow.ts
+++ b/apps/bubblelab-api/src/services/ai/bubbleflow-generator.workflow.ts
@@ -531,10 +531,10 @@ ${AI_AGENT_BEHAVIOR_INSTRUCTIONS}`;
 
           model: {
             reasoningEffort: 'medium',
-            model: 'google/gemini-3-flash-preview',
+            model: 'google/gemini-2.5-flash',
             temperature: 0.3,
             backupModel: {
-              model: 'anthropic/claude-sonnet-4-5',
+              model: 'google/gemini-2.5-flash-lite',
               temperature: 0.3,
             },
           },
diff --git a/packages/bubble-shared-schemas/src/bubbleflow-generation-prompts.ts b/packages/bubble-shared-schemas/src/bubbleflow-generation-prompts.ts
index 22482a5d..de095fdf 100644
--- a/packages/bubble-shared-schemas/src/bubbleflow-generation-prompts.ts
+++ b/packages/bubble-shared-schemas/src/bubbleflow-generation-prompts.ts
@@ -8,11 +8,11 @@ import { AvailableModel } from './ai-models.js';
 
 // Model constants for AI agent instructions
 export const RECOMMENDED_MODELS = {
-  BEST: 'google/gemini-3-pro-preview',
+  BEST: 'google/gemini-2.5-flash',
   BEST_ALT: 'openai/gpt-5.2',
-  PRO: 'google/gemini-3-flash-preview',
+  PRO: 'google/gemini-2.5-flash',
   PRO_ALT: 'anthropic/claude-sonnet-4-5',
-  FAST: 'google/gemini-3-flash-preview',
+  FAST: 'google/gemini-2.5-flash',
   FAST_ALT: 'anthropic/claude-haiku-4-5',
   LITE: 'google/gemini-2.5-flash-lite',
   IMAGE: 'google/gemini-3-pro-image-preview',
diff --git a/packages/bubble-shared-schemas/src/coffee.ts b/packages/bubble-shared-schemas/src/coffee.ts
index 6657cb64..58beef80 100644
--- a/packages/bubble-shared-schemas/src/coffee.ts
+++ b/packages/bubble-shared-schemas/src/coffee.ts
@@ -10,7 +10,7 @@ import { CredentialType } from './types.js';
 // Constants
 export const COFFEE_MAX_ITERATIONS = 30;
 export const COFFEE_MAX_QUESTIONS = 5;
-export const COFFEE_DEFAULT_MODEL = 'google/gemini-3-pro-preview' as const;
+export const COFFEE_DEFAULT_MODEL = 'google/gemini-2.5-flash' as const;
 
 // ============================================================================
 // Clarification Schemas