add gpt-4o-realtime-preview model to openai provider

internal/provider/openai.go

@@ -63,6 +63,17 @@ func (p *OpenAIProvider) Models() []Model {
 			SupportedLanguages: allLangs,
 			Endpoint:           &EndpointConfig{BaseURL: "https://api.openai.com", Path: "/v1/audio/transcriptions"},
 		},
+		{
+			ID:                 "gpt-4o-realtime-preview",
+			Name:               "GPT-4o Realtime",
+			Description:        "Real-time streaming transcription with GPT-4o",
+			Type:               Transcription,
+			Streaming:          true,
+			Local:              false,
+			AdapterType:        "openai-realtime",
+			SupportedLanguages: allLangs,
+			Endpoint:           &EndpointConfig{BaseURL: "wss://api.openai.com", Path: "/v1/realtime"},
+		},
 		// LLM models
 		{
 			ID:                 "gpt-4o-mini",

internal/provider/provider_test.go

@@ -176,9 +176,9 @@ func TestModelsOfType(t *testing.T) {
 	trans := ModelsOfType(p, Transcription)
 	llm := ModelsOfType(p, LLM)
 
-	// OpenAI has 3 transcription models: whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe
-	if len(trans) != 3 {
-		t.Errorf("ModelsOfType(Transcription) = %d, want 3", len(trans))
+	// OpenAI has 4 transcription models: whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-realtime-preview
+	if len(trans) != 4 {
+		t.Errorf("ModelsOfType(Transcription) = %d, want 4", len(trans))
 	}
 	// OpenAI has 2 LLM models: gpt-4o-mini, gpt-4o
 	if len(llm) != 2 {
@@ -263,6 +263,39 @@ func TestValidateModelLanguage(t *testing.T) {
 	}
 }
 
+func TestOpenAIRealtimeModel(t *testing.T) {
+	m, err := GetModel("openai", "gpt-4o-realtime-preview")
+	if err != nil {
+		t.Fatalf("GetModel('openai', 'gpt-4o-realtime-preview') error: %v", err)
+	}
+
+	if !m.Streaming {
+		t.Error("gpt-4o-realtime-preview should have Streaming=true")
+	}
+
+	if m.AdapterType != "openai-realtime" {
+		t.Errorf("gpt-4o-realtime-preview AdapterType=%q, want 'openai-realtime'", m.AdapterType)
+	}
+
+	if m.Endpoint == nil {
+		t.Fatal("gpt-4o-realtime-preview should have Endpoint set")
+	}
+
+	if m.Endpoint.BaseURL != "wss://api.openai.com" {
+		t.Errorf("gpt-4o-realtime-preview Endpoint.BaseURL=%q, want 'wss://api.openai.com'", m.Endpoint.BaseURL)
+	}
+
+	if len(m.SupportedLanguages) != 57 {
+		t.Errorf("gpt-4o-realtime-preview has %d languages, want 57", len(m.SupportedLanguages))
+	}
+
+	// default model should still be whisper-1
+	p := GetProvider("openai")
+	if p.DefaultModel(Transcription) != "whisper-1" {
+		t.Errorf("DefaultModel(Transcription) = %q, want 'whisper-1'", p.DefaultModel(Transcription))
+	}
+}
+
 func TestElevenLabsProvider(t *testing.T) {
 	p := GetProvider("elevenlabs")
 	if p == nil {

progress.txt

@@ -369,3 +369,13 @@ Started: Sun Feb  1 12:22:47 AM CET 2026
 - SendChunk() calls reconnect() on write errors and retries the chunk
 - Sends notification error to resultsCh on successful reconnect
 - All tests passing with -race flag, typecheck passes
+
+### Task 36: Add OpenAI Realtime model to OpenAI provider
+- Added `gpt-4o-realtime-preview` model to OpenAI provider's Models()
+- Type=Transcription, Streaming=true, AdapterType='openai-realtime'
+- Endpoint.BaseURL='wss://api.openai.com', Path='/v1/realtime'
+- SupportedLanguages=language.AllLanguageCodes() (all 57 languages)
+- DefaultModel(Transcription) unchanged (still returns 'whisper-1')
+- Added TestOpenAIRealtimeModel test verifying all properties
+- Updated TestModelsOfType to expect 4 transcription models for OpenAI
+- All tests passing, typecheck passes

tasks/prd.jsonc

@@ -847,7 +847,7 @@
 				"DefaultModel(Transcription) still returns 'whisper-1'",
 				"Typecheck passes"
 			],
-			"passes": false
+			"passes": true
 		},
 		{
 			"title": "Create OpenAI Realtime StreamingAdapter",