**refactor(runtime): centralize reasoning effort logic for GPT models**

Extract reasoning effort mapping into a reusable function `setReasoningEffortByAlias` to reduce redundancy and improve maintainability. Introduce support for the "gpt-5.1-none" variant in the registry and runtime executor.

internal/registry/model_definitions.go

@@ -431,13 +431,13 @@ func GetOpenAIModels() []*ModelInfo {
 			SupportedParameters: []string{"tools"},
 		},
 		{
-			ID:                  "gpt-5.1-minimal",
+			ID:                  "gpt-5.1-none",
 			Object:              "model",
 			Created:             time.Now().Unix(),
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Minimal",
+			DisplayName:         "GPT 5 Low",
 			Description:         "Stable version of GPT 5, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,

internal/runtime/executor/codex_executor.go

@@ -53,71 +53,8 @@ func (e *CodexExecutor) Execute(ctx context.Context, auth *cliproxyauth.Auth, re
 	to := sdktranslator.FromString("codex")
 	body := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), false)
 
-	if util.InArray([]string{"gpt-5", "gpt-5-minimal", "gpt-5-low", "gpt-5-medium", "gpt-5-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5")
-		switch req.Model {
-		case "gpt-5-minimal":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "minimal")
-		case "gpt-5-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5-codex", "gpt-5-codex-low", "gpt-5-codex-medium", "gpt-5-codex-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5-codex")
-		switch req.Model {
-		case "gpt-5-codex-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-codex-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5-codex-mini", "gpt-5-codex-mini-medium", "gpt-5-codex-mini-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5-codex-mini")
-		switch req.Model {
-		case "gpt-5-codex-mini-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-mini-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		}
-	} else if util.InArray([]string{"gpt-5.1", "gpt-5.1-minimal", "gpt-5.1-low", "gpt-5.1-medium", "gpt-5.1-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1")
-		switch req.Model {
-		case "gpt-5.1-minimal":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "minimal")
-		case "gpt-5.1-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5.1-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5.1-codex", "gpt-5.1-codex-low", "gpt-5.1-codex-medium", "gpt-5.1-codex-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1-codex")
-		switch req.Model {
-		case "gpt-5.1-codex-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5.1-codex-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-codex-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5.1-codex-mini", "gpt-5.1-codex-mini-medium", "gpt-5.1-codex-mini-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1-codex-mini")
-		switch req.Model {
-		case "gpt-5.1-codex-mini-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-codex-mini-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		}
-	}
+	body = e.setReasoningEffortByAlias(req.Model, body)
+
 	body = applyPayloadConfig(e.cfg, req.Model, body)
 
 	body, _ = sjson.SetBytes(body, "stream", true)
@@ -209,69 +146,7 @@ func (e *CodexExecutor) ExecuteStream(ctx context.Context, auth *cliproxyauth.Au
 	to := sdktranslator.FromString("codex")
 	body := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), true)
 
-	if util.InArray([]string{"gpt-5", "gpt-5-minimal", "gpt-5-low", "gpt-5-medium", "gpt-5-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5")
-		switch req.Model {
-		case "gpt-5-minimal":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "minimal")
-		case "gpt-5-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5-codex", "gpt-5-codex-low", "gpt-5-codex-medium", "gpt-5-codex-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5-codex")
-		switch req.Model {
-		case "gpt-5-codex-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-codex-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5-codex-mini", "gpt-5-codex-mini-medium", "gpt-5-codex-mini-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5-codex-mini")
-		switch req.Model {
-		case "gpt-5-codex-mini-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-mini-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5.1", "gpt-5.1-minimal", "gpt-5.1-low", "gpt-5.1-medium", "gpt-5.1-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1")
-		switch req.Model {
-		case "gpt-5.1-minimal":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "minimal")
-		case "gpt-5.1-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5.1-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5.1-codex", "gpt-5.1-codex-low", "gpt-5.1-codex-medium", "gpt-5.1-codex-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1-codex")
-		switch req.Model {
-		case "gpt-5.1-codex-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5.1-codex-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-codex-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		}
-	} else if util.InArray([]string{"gpt-5.1-codex-mini", "gpt-5.1-codex-mini-medium", "gpt-5.1-codex-mini-high"}, req.Model) {
-		body, _ = sjson.SetBytes(body, "model", "gpt-5.1-codex-mini")
-		switch req.Model {
-		case "gpt-5.1-codex-mini-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5.1-codex-mini-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		}
-	}
+	body = e.setReasoningEffortByAlias(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)
 	body, _ = sjson.DeleteBytes(body, "previous_response_id")
 
@@ -367,46 +242,7 @@ func (e *CodexExecutor) CountTokens(ctx context.Context, auth *cliproxyauth.Auth
 
 	modelForCounting := req.Model
 
-	if util.InArray([]string{"gpt-5", "gpt-5-minimal", "gpt-5-low", "gpt-5-medium", "gpt-5-high"}, req.Model) {
-		modelForCounting = "gpt-5"
-		body, _ = sjson.SetBytes(body, "model", "gpt-5")
-		switch req.Model {
-		case "gpt-5-minimal":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "minimal")
-		case "gpt-5-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		}
-	} else if util.InArray([]string{"gpt-5-codex", "gpt-5-codex-low", "gpt-5-codex-medium", "gpt-5-codex-high"}, req.Model) {
-		modelForCounting = "gpt-5"
-		body, _ = sjson.SetBytes(body, "model", "gpt-5-codex")
-		switch req.Model {
-		case "gpt-5-codex-low":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		case "gpt-5-codex-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "low")
-		}
-	} else if util.InArray([]string{"gpt-5-codex-mini", "gpt-5-codex-mini-medium", "gpt-5-codex-mini-high"}, req.Model) {
-		modelForCounting = "gpt-5"
-		body, _ = sjson.SetBytes(body, "model", "codex-mini-latest")
-		switch req.Model {
-		case "gpt-5-codex-mini-medium":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		case "gpt-5-codex-mini-high":
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "high")
-		default:
-			body, _ = sjson.SetBytes(body, "reasoning.effort", "medium")
-		}
-	}
+	body = e.setReasoningEffortByAlias(req.Model, body)
 
 	body, _ = sjson.DeleteBytes(body, "previous_response_id")
 	body, _ = sjson.SetBytes(body, "stream", false)
@@ -426,6 +262,71 @@ func (e *CodexExecutor) CountTokens(ctx context.Context, auth *cliproxyauth.Auth
 	return cliproxyexecutor.Response{Payload: []byte(translated)}, nil
 }
 
+func (e *CodexExecutor) setReasoningEffortByAlias(modelName string, payload []byte) []byte {
+	if util.InArray([]string{"gpt-5", "gpt-5-minimal", "gpt-5-low", "gpt-5-medium", "gpt-5-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5")
+		switch modelName {
+		case "gpt-5-minimal":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "minimal")
+		case "gpt-5-low":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "low")
+		case "gpt-5-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	} else if util.InArray([]string{"gpt-5-codex", "gpt-5-codex-low", "gpt-5-codex-medium", "gpt-5-codex-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5-codex")
+		switch modelName {
+		case "gpt-5-codex-low":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "low")
+		case "gpt-5-codex-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5-codex-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	} else if util.InArray([]string{"gpt-5-codex-mini", "gpt-5-codex-mini-medium", "gpt-5-codex-mini-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5-codex-mini")
+		switch modelName {
+		case "gpt-5-codex-mini-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5-codex-mini-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	} else if util.InArray([]string{"gpt-5.1", "gpt-5.1-none", "gpt-5.1-low", "gpt-5.1-medium", "gpt-5.1-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5.1")
+		switch modelName {
+		case "gpt-5.1-none":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "none")
+		case "gpt-5.1-low":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "low")
+		case "gpt-5.1-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5.1-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	} else if util.InArray([]string{"gpt-5.1-codex", "gpt-5.1-codex-low", "gpt-5.1-codex-medium", "gpt-5.1-codex-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5.1-codex")
+		switch modelName {
+		case "gpt-5.1-codex-low":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "low")
+		case "gpt-5.1-codex-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5.1-codex-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	} else if util.InArray([]string{"gpt-5.1-codex-mini", "gpt-5.1-codex-mini-medium", "gpt-5.1-codex-mini-high"}, modelName) {
+		payload, _ = sjson.SetBytes(payload, "model", "gpt-5.1-codex-mini")
+		switch modelName {
+		case "gpt-5.1-codex-mini-medium":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "medium")
+		case "gpt-5.1-codex-mini-high":
+			payload, _ = sjson.SetBytes(payload, "reasoning.effort", "high")
+		}
+	}
+	return payload
+}
+
 func tokenizerForCodexModel(model string) (tokenizer.Codec, error) {
 	sanitized := strings.ToLower(strings.TrimSpace(model))
 	switch {