fix(minimax): MiniMax M3 model support (#3434)

Co-authored-by: ForgeCode <noreply@forgecode.dev>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: 3 people

crates/forge_app/src/dto/openai/transformers/minimax.rs

@@ -4,38 +4,45 @@ use crate::dto::openai::Request;
 
 /// Transformer that applies minimax-specific parameter adjustments
 ///
-/// Minimax M2 models require specific temperature, top_p, and top_k values
+/// Minimax models require specific temperature, top_p, and top_k values
 /// for optimal performance:
 /// - Temperature: 1.0
 /// - Top P: 0.95
-/// - Top K: 40 (for m2.1), 20 (for other m2 models)
+/// - Top K: 40 (for m2.1), 20 (for all other models including M2, M2.5, M2.7,
+///   M3)
+///
+/// These parameters are based on official MiniMax evaluation methodology
+/// (see VideoMMMU, Video-MME benchmarks in M3 blog post).
 pub struct SetMinimaxParams;
 
 impl Transformer for SetMinimaxParams {
     type Value = Request;
 
     fn transform(&mut self, mut request: Self::Value) -> Self::Value {
-        // Check if model is a minimax-m2 model
         let model_id = request
             .model
             .as_ref()
             .map(|m| m.as_str().to_lowercase())
             .unwrap_or_default();
 
-        if !model_id.contains("minimax-m2") {
+        // Match MiniMax model patterns (minimax-m2, minimax-m3, etc.)
+        let is_minimax = model_id.contains("minimax-m2") || model_id.contains("minimax-m3");
+
+        if !is_minimax {
             return request;
         }
 
-        // Set temperature to 1.0 for minimax-m2 models
+        // Set temperature to 1.0 for minimax models
         request.temperature = Some(1.0);
 
-        // Set top_p to 0.95 for minimax-m2 models
+        // Set top_p to 0.95 for minimax models
         request.top_p = Some(0.95);
 
         // Set top_k based on model variant
         if model_id.contains("minimax-m2.1") {
             request.top_k = Some(40);
         } else {
+            // M2, M2.5, M2.7, M3 all use top_k = 20
             request.top_k = Some(20);
         }
 
@@ -145,4 +152,37 @@ mod tests {
         assert_eq!(actual.top_p, fixture.top_p);
         assert_eq!(actual.top_k, fixture.top_k);
     }
+
+    #[test]
+    fn test_minimax_m3_sets_parameters() {
+        let fixture = create_request_fixture("minimax-m3");
+        let mut transformer = SetMinimaxParams;
+        let actual = transformer.transform(fixture);
+
+        assert_eq!(actual.temperature, Some(1.0));
+        assert_eq!(actual.top_p, Some(0.95));
+        assert_eq!(actual.top_k, Some(20)); // M3 uses same config as M2.7
+    }
+
+    #[test]
+    fn test_minimax_m3_case_insensitive() {
+        let fixture = create_request_fixture("MiniMax-M3");
+        let mut transformer = SetMinimaxParams;
+        let actual = transformer.transform(fixture);
+
+        assert_eq!(actual.temperature, Some(1.0));
+        assert_eq!(actual.top_p, Some(0.95));
+        assert_eq!(actual.top_k, Some(20)); // M3 uses same config as M2.7
+    }
+
+    #[test]
+    fn test_minimax_m3_bedrock_provider_id() {
+        let fixture = create_request_fixture("minimax.minimax-m3");
+        let mut transformer = SetMinimaxParams;
+        let actual = transformer.transform(fixture);
+
+        assert_eq!(actual.temperature, Some(1.0));
+        assert_eq!(actual.top_p, Some(0.95));
+        assert_eq!(actual.top_k, Some(20)); // M3 uses same config as M2.7
+    }
 }

crates/forge_repo/src/provider/provider.json

@@ -1443,6 +1443,16 @@
         "supports_reasoning": true,
         "input_modalities": ["text"]
       },
+      {
+        "id": "minimax.minimax-m3",
+        "name": "MiniMax M3",
+        "description": "Frontier coding model with 1M context, MSA sparse attention, native multimodality, and agentic capabilities",
+        "context_length": 1000000,
+        "tools_supported": true,
+        "supports_parallel_tool_calls": true,
+        "supports_reasoning": true,
+        "input_modalities": ["text", "image"]
+      },
       {
         "id": "minimax.minimax-m2.1",
         "name": "MiniMax M2.1",
@@ -1453,6 +1463,7 @@
         "supports_reasoning": true,
         "input_modalities": ["text"]
       },
+      
       {
         "id": "us.anthropic.claude-sonnet-4-20250514-v1:0",
         "name": "Claude Sonnet 4 (US)",
@@ -2506,6 +2517,16 @@
     "response_type": "Anthropic",
     "url": "https://{{#if HOSTNAME}}{{HOSTNAME}}{{else}}api.minimax.io{{/if}}/anthropic/v1/messages",
     "models": [
+      {
+        "id": "MiniMax-M3",
+        "name": "MiniMax M3",
+        "description": "Frontier coding model with 1M context, MSA sparse attention, native multimodality (image/video), and agentic capabilities",
+        "context_length": 1000000,
+        "tools_supported": true,
+        "supports_parallel_tool_calls": true,
+        "supports_reasoning": true,
+        "input_modalities": ["text", "image"]
+      },
       {
         "id": "MiniMax-M2.7",
         "name": "MiniMax M2.7",