diff --git a/internal/config/convert.go b/internal/config/convert.go
index 73ea1cb..1923325 100644
--- a/internal/config/convert.go
+++ b/internal/config/convert.go
@@ -51,6 +51,9 @@ func (c *Config) resolveAPIKeyForProvider(provider string) string {
 	case "elevenlabs":
 		providerName = "elevenlabs"
 		envVar = "ELEVENLABS_API_KEY"
+	case "deepgram":
+		providerName = "deepgram"
+		envVar = "DEEPGRAM_API_KEY"
 	}
 
 	if c.Providers != nil {
diff --git a/internal/config/save.go b/internal/config/save.go
index 080879e..5bfd2e5 100644
--- a/internal/config/save.go
+++ b/internal/config/save.go
@@ -46,6 +46,8 @@ keywords = []
 #   api_key = ""               # Mistral API key (or set MISTRAL_API_KEY env var)
 # [providers.elevenlabs]
 #   api_key = ""               # ElevenLabs API key (or set ELEVENLABS_API_KEY env var)
+# [providers.deepgram]
+#   api_key = ""               # Deepgram API key (or set DEEPGRAM_API_KEY env var)
 
 # ─────────────────────────────────────────────────────────────────────────────
 # Audio Recording
diff --git a/internal/tui/configure.go b/internal/tui/configure.go
index a44a0ac..abbb948 100644
--- a/internal/tui/configure.go
+++ b/internal/tui/configure.go
@@ -17,7 +17,7 @@ type ConfigureResult struct {
 }
 
 // AllProviders is the list of all supported cloud providers (require API keys)
-var AllProviders = []string{"openai", "groq", "mistral", "elevenlabs"}
+var AllProviders = []string{"openai", "groq", "mistral", "elevenlabs", "deepgram"}
 
 // LocalProviders is the list of local providers (no API key required)
 var LocalProviders = []string{"whisper-cpp"}
@@ -28,6 +28,7 @@ var providerDisplayNames = map[string]string{
 	"groq":        "Groq",
 	"mistral":     "Mistral",
 	"elevenlabs":  "ElevenLabs",
+	"deepgram":    "Deepgram",
 	"whisper-cpp": "Whisper.cpp (local)",
 }
 
diff --git a/progress.txt b/progress.txt
index 8482a49..bd09876 100644
--- a/progress.txt
+++ b/progress.txt
@@ -417,4 +417,11 @@ Started: Sun Feb  1 12:22:47 AM CET 2026
 - Wraps streaming adapter in `NewStreamingTranscriber(adapter, config.Language)`
 - Updated tests: streaming models now succeed (not error)
 - Added tests for deepgram and openai-realtime streaming models
-- All tests passing with -race flag, typecheck passes
\ No newline at end of file
+- All tests passing with -race flag, typecheck passes
+
+### Task 43: Add DEEPGRAM_API_KEY env var support
+- Added `case "deepgram"` to `resolveAPIKeyForProvider()` in convert.go
+- Maps to providerName="deepgram" and envVar="DEEPGRAM_API_KEY"
+- Updated config template in save.go with commented deepgram section
+- Added "deepgram" to AllProviders and providerDisplayNames in configure.go for TUI
+- All tests passing, typecheck passes
\ No newline at end of file
diff --git a/tasks/prd.jsonc b/tasks/prd.jsonc
index 9e01932..f50f4a9 100644
--- a/tasks/prd.jsonc
+++ b/tasks/prd.jsonc
@@ -1002,13 +1002,13 @@
 				"Update providers config section to include deepgram",
 				"Update config template in save.go with deepgram section"
 			],
-			"verify": [
-				"Deepgram API key resolved from config or DEEPGRAM_API_KEY env",
-				"Config template includes deepgram section",
-				"Typecheck passes"
-			],
-			"passes": false
-		},
+		"verify": [
+			"Deepgram API key resolved from config or DEEPGRAM_API_KEY env",
+			"Config template includes deepgram section",
+			"Typecheck passes"
+		],
+		"passes": true
+	},
 		// ============================================================================
 		// PHASE 9: DOCUMENTATION
 		// Consolidated at the end - update all docs once architecture is stable