diff --git a/internal/transcriber/adapter_groq_transcription.go b/internal/transcriber/adapter_groq_transcription.go
deleted file mode 100644
index 54d0fe0..0000000
--- a/internal/transcriber/adapter_groq_transcription.go
+++ /dev/null
@@ -1,66 +0,0 @@
-package transcriber
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"log"
-	"strings"
-	"time"
-
-	"github.com/sashabaranov/go-openai"
-)
-
-// GroqTranscriptionAdapter implements BatchAdapter for Groq Whisper API
-type GroqTranscriptionAdapter struct {
-	client *openai.Client
-	config Config
-}
-
-func NewGroqTranscriptionAdapter(config Config) *GroqTranscriptionAdapter {
-	clientConfig := openai.DefaultConfig(config.APIKey)
-	clientConfig.BaseURL = "https://api.groq.com/openai/v1"
-	client := openai.NewClientWithConfig(clientConfig)
-
-	return &GroqTranscriptionAdapter{
-		client: client,
-		config: config,
-	}
-}
-
-func (a *GroqTranscriptionAdapter) Transcribe(ctx context.Context, audioData []byte) (string, error) {
-	if len(audioData) == 0 {
-		return "", nil
-	}
-
-	// Convert raw PCM to WAV format
-	wavData, err := convertToWAV(audioData)
-	if err != nil {
-		return "", fmt.Errorf("convert to WAV: %w", err)
-	}
-
-	// Create transcription request
-	req := openai.AudioRequest{
-		Model:    a.config.Model,
-		Reader:   bytes.NewReader(wavData),
-		FilePath: "audio.wav",
-		Language: a.config.Language,
-	}
-
-	// Add keywords as prompt to help with spelling hints
-	if len(a.config.Keywords) > 0 {
-		req.Prompt = strings.Join(a.config.Keywords, ", ")
-	}
-
-	start := time.Now()
-	resp, err := a.client.CreateTranscription(ctx, req)
-	duration := time.Since(start)
-
-	if err != nil {
-		log.Printf("groq-transcription-adapter: API call failed after %v: %v", duration, err)
-		return "", fmt.Errorf("groq transcription: %w", err)
-	}
-
-	log.Printf("groq-transcription-adapter: transcribed %d bytes in %v: %q", len(audioData), duration, resp.Text)
-	return resp.Text, nil
-}
diff --git a/internal/transcriber/adapter_mistral.go b/internal/transcriber/adapter_mistral.go
deleted file mode 100644
index 4d8d0a9..0000000
--- a/internal/transcriber/adapter_mistral.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package transcriber
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"log"
-	"time"
-
-	"github.com/sashabaranov/go-openai"
-)
-
-// MistralAdapter implements BatchAdapter for Mistral Voxtral API
-type MistralAdapter struct {
-	client *openai.Client
-	config Config
-}
-
-func NewMistralAdapter(config Config) *MistralAdapter {
-	clientConfig := openai.DefaultConfig(config.APIKey)
-	clientConfig.BaseURL = "https://api.mistral.ai/v1"
-	client := openai.NewClientWithConfig(clientConfig)
-
-	return &MistralAdapter{
-		client: client,
-		config: config,
-	}
-}
-
-func (a *MistralAdapter) Transcribe(ctx context.Context, audioData []byte) (string, error) {
-	if len(audioData) == 0 {
-		return "", nil
-	}
-
-	// Convert raw PCM to WAV format
-	wavData, err := convertToWAV(audioData)
-	if err != nil {
-		return "", fmt.Errorf("convert to WAV: %w", err)
-	}
-
-	// Create transcription request
-	req := openai.AudioRequest{
-		Model:    a.config.Model,
-		Reader:   bytes.NewReader(wavData),
-		FilePath: "audio.wav",
-		Language: a.config.Language,
-	}
-
-	start := time.Now()
-	resp, err := a.client.CreateTranscription(ctx, req)
-	duration := time.Since(start)
-
-	if err != nil {
-		log.Printf("mistral-adapter: API call failed after %v: %v", duration, err)
-		return "", fmt.Errorf("mistral transcription: %w", err)
-	}
-
-	log.Printf("mistral-adapter: transcribed %d bytes in %v: %q", len(audioData), duration, resp.Text)
-	return resp.Text, nil
-}
diff --git a/internal/transcriber/transcriber.go b/internal/transcriber/transcriber.go
index f5bfb04..51c204e 100644
--- a/internal/transcriber/transcriber.go
+++ b/internal/transcriber/transcriber.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/leonardotrapani/hyprvoice/internal/provider"
 	"github.com/leonardotrapani/hyprvoice/internal/recording"
 )
 
@@ -44,7 +45,9 @@ func NewTranscriber(config Config) (Transcriber, error) {
 		if config.APIKey == "" {
 			return nil, fmt.Errorf("Groq API key required")
 		}
-		adapter = NewGroqTranscriptionAdapter(config)
+		// use consolidated OpenAI adapter with Groq endpoint
+		endpoint := &provider.EndpointConfig{BaseURL: "https://api.groq.com/openai"}
+		adapter = NewOpenAIAdapter(endpoint, config.APIKey, config.Model, config.Language, config.Keywords, "groq")
 
 	case "groq-translation":
 		if config.APIKey == "" {
@@ -56,7 +59,9 @@ func NewTranscriber(config Config) (Transcriber, error) {
 		if config.APIKey == "" {
 			return nil, fmt.Errorf("Mistral API key required")
 		}
-		adapter = NewMistralAdapter(config)
+		// use consolidated OpenAI adapter with Mistral endpoint
+		endpoint := &provider.EndpointConfig{BaseURL: "https://api.mistral.ai"}
+		adapter = NewOpenAIAdapter(endpoint, config.APIKey, config.Model, config.Language, config.Keywords, "mistral")
 
 	case "elevenlabs":
 		if config.APIKey == "" {
diff --git a/progress.txt b/progress.txt
index bb17e8a..2d326d3 100644
--- a/progress.txt
+++ b/progress.txt
@@ -115,3 +115,11 @@ Started: Sun Feb  1 12:22:47 AM CET 2026
 - Added tests: `TestOpenAIAdapter_Creation`, `TestOpenAIAdapterFromConfig`
 - Updated factory to use `NewOpenAIAdapterFromConfig` for now (will be updated in Task 15)
 - All tests passing, typecheck passes
+
+### Task 13: Remove redundant Groq and Mistral transcription adapters
+- Deleted `internal/transcriber/adapter_groq_transcription.go`
+- Deleted `internal/transcriber/adapter_mistral.go`
+- KEPT `adapter_groq_translation.go` (uses CreateTranslation, different from CreateTranscription)
+- Updated `transcriber.go` factory to use consolidated OpenAI adapter for groq-transcription and mistral-transcription
+- Both now use `NewOpenAIAdapter` with their respective endpoints
+- All tests passing, typecheck passes
diff --git a/tasks/prd.jsonc b/tasks/prd.jsonc
index 8df67a9..21fe956 100644
--- a/tasks/prd.jsonc
+++ b/tasks/prd.jsonc
@@ -330,7 +330,7 @@
 				"No broken imports",
 				"Typecheck passes"
 			],
-			"passes": false
+			"passes": true
 		},
 		{
 			"title": "Update ElevenLabs BatchAdapter to use EndpointConfig",