webbrain-one · esokullu · Sep 23, 2026 · Sep 22, 2026 · Sep 22, 2026 · Sep 23, 2026
diff --git a/src/chrome/src/providers/context-windows.js b/src/chrome/src/providers/context-windows.js
@@ -279,6 +279,7 @@ export function inferContextWindow(config = {}) {
   if (!model) return DEFAULT_CLOUD_CONTEXT_WINDOW;
 
   // OpenAI
+  if (/^gpt-6-luna-pro(?:[.\-]|$)/.test(model) || model.includes('/gpt-6-luna-pro')) return 1050000;
   if (/^gpt-5\.6(?:[.\-]|$)/.test(model) || model.includes('/gpt-5.6')) return 1050000;
   if (model.includes('gpt-5.5-pro')) return 1050000;
   if (/^gpt-5(?:[.\-]|$)/.test(model) || model.includes('/gpt-5')) return 400000;

diff --git a/src/chrome/src/providers/openai.js b/src/chrome/src/providers/openai.js
@@ -4,6 +4,7 @@ import {
   isNewOpenAIContractConfig,
   isOfficialOpenAIConfig,
   isOpenCodeZenConfig,
+  requiresOpenAIDefaultTemperature,
   shouldUseOpenAIResponsesApi,
   supportsOpenAIAskStreaming,
   applyOpenRouterRoutingVariant,
@@ -149,7 +150,7 @@ export class OpenAICompatibleProvider extends BaseLLMProvider {
    * `supportsVision` getter above.
    */
   _modelNameSniffedVision(model) {
-    return /gpt-4o|gpt-4\.1|gpt-4-turbo|gpt-5|claude|gemini|grok|minimax-m3|kimi-k(?:-?3|2\.[5-9])|llava|qwen.*vl|qwen2.*vl|qwen3.*vl|qwen3\.[5-9]|qwen3p8-27b|pixtral|llama.*vision|gemma.*vision|gemma-?[34]|step-3/.test(String(model || ''));
+    return /gpt-4o|gpt-4\.1|gpt-4-turbo|gpt-5|gpt-6-luna-pro(?:$|[-_.:/])|claude|gemini|grok|minimax-m3|kimi-k(?:-?3|2\.[5-9])|llava|qwen.*vl|qwen2.*vl|qwen3.*vl|qwen3\.[5-9]|qwen3p8-27b|pixtral|llama.*vision|gemma.*vision|gemma-?[34]|step-3/.test(String(model || ''));
   }
 
   get useCompactPrompt() {
@@ -293,11 +294,16 @@ export class OpenAICompatibleProvider extends BaseLLMProvider {
   }
 
   _addTemperature(body, options) {
-    // GPT-5 / o-series only accept the default temperature (1). Sending
-    // anything else returns 400. Provider configs can impose
+    // GPT-5, GPT-6 Luna Pro, and o-series models only accept the default
+    // temperature. Provider configs can impose
     // the same omission for fixed-temperature models such as Kimi K2.5/K3.
     // In both cases, let the API apply its required default.
-    if (this._isNewOpenAIContract() || this.config.omitTemperature) return;
+    if (requiresOpenAIDefaultTemperature({
+      ...this.config,
+      providerName: this.config.providerName || this.name,
+      baseUrl: this.baseUrl,
+      model: this.model,
+    }) || this.config.omitTemperature) return;
     body.temperature = options.temperature ?? 0.7;
   }
 

diff --git a/src/chrome/src/providers/provider-compatibility.js b/src/chrome/src/providers/provider-compatibility.js
@@ -264,6 +264,21 @@ export function isNewOpenAIContractConfig(config = {}) {
   return isNewOpenAIContractModel(config.model);
 }
 
+/**
+ * GPT-6 Luna Pro uses Chat Completions with `max_tokens`, but rejects an
+ * explicit temperature. Keep this separate from the GPT-5/o-series contract,
+ * whose token-field migration is different.
+ */
+export function requiresOpenAIDefaultTemperature(config = {}) {
+  if (isNewOpenAIContractConfig(config)) return true;
+  const providerName = clean(config.providerName);
+  const model = clean(config.model);
+  if (providerName === 'openrouter') {
+    return /(?:^|\/)openai\/gpt-6-luna-pro(?:$|[-_.\/:])/.test(model);
+  }
+  return isOfficialOpenAIConfig(config) && /^gpt-6-luna-pro(?:$|[-_.:])/.test(model);
+}
+
 export function supportsOpenAIAskStreaming(config = {}) {
   if (!isOfficialOpenAIConfig(config)) return false;
 
@@ -274,6 +289,7 @@ export function supportsOpenAIAskStreaming(config = {}) {
   if (shouldUseOpenAIResponsesApi(config)) return true;
 
   return [
+    /^gpt-6-luna-pro(?:$|[-_.:])/,
     /^gpt-5\.5(?:$|-\d{4}-\d{2}-\d{2}$)/,
     /^gpt-5\.4(?:$|-\d{4}-\d{2}-\d{2}$|-(?:mini|nano)(?:$|-\d{4}-\d{2}-\d{2}$))/,
     /^gpt-5\.(?:1|2)(?:$|-\d{4}-\d{2}-\d{2}$)/,

diff --git a/src/chrome/src/ui/settings.js b/src/chrome/src/ui/settings.js
@@ -3241,6 +3241,7 @@ function renderProviders() {
         { key: 'apiKey', labelKey: 'st.provider.field.api_key', type: 'password', placeholder: 'sk-...' },
         { key: 'model', labelKey: 'st.provider.field.model', type: 'text', placeholder: 'gpt-5.6-terra',
           suggestions: [
+            'gpt-6-luna-pro',
             'gpt-5.6-terra',
             'gpt-5.6-sol',
             'gpt-5.6-luna',

diff --git a/src/firefox/src/providers/context-windows.js b/src/firefox/src/providers/context-windows.js
@@ -279,6 +279,7 @@ export function inferContextWindow(config = {}) {
   if (!model) return DEFAULT_CLOUD_CONTEXT_WINDOW;
 
   // OpenAI
+  if (/^gpt-6-luna-pro(?:[.\-]|$)/.test(model) || model.includes('/gpt-6-luna-pro')) return 1050000;
   if (/^gpt-5\.6(?:[.\-]|$)/.test(model) || model.includes('/gpt-5.6')) return 1050000;
   if (model.includes('gpt-5.5-pro')) return 1050000;
   if (/^gpt-5(?:[.\-]|$)/.test(model) || model.includes('/gpt-5')) return 400000;

diff --git a/src/firefox/src/providers/openai.js b/src/firefox/src/providers/openai.js
@@ -4,6 +4,7 @@ import {
   isNewOpenAIContractConfig,
   isOfficialOpenAIConfig,
   isOpenCodeZenConfig,
+  requiresOpenAIDefaultTemperature,
   shouldUseOpenAIResponsesApi,
   supportsOpenAIAskStreaming,
   applyOpenRouterRoutingVariant,
@@ -150,7 +151,7 @@ export class OpenAICompatibleProvider extends BaseLLMProvider {
    * `supportsVision` getter above.
    */
   _modelNameSniffedVision(model) {
-    return /gpt-4o|gpt-4\.1|gpt-4-turbo|gpt-5|claude|gemini|grok|minimax-m3|kimi-k(?:-?3|2\.[5-9])|llava|qwen.*vl|qwen2.*vl|qwen3.*vl|qwen3\.[5-9]|qwen3p8-27b|pixtral|llama.*vision|gemma.*vision|gemma-?[34]|step-3/.test(String(model || ''));
+    return /gpt-4o|gpt-4\.1|gpt-4-turbo|gpt-5|gpt-6-luna-pro(?:$|[-_.:/])|claude|gemini|grok|minimax-m3|kimi-k(?:-?3|2\.[5-9])|llava|qwen.*vl|qwen2.*vl|qwen3.*vl|qwen3\.[5-9]|qwen3p8-27b|pixtral|llama.*vision|gemma.*vision|gemma-?[34]|step-3/.test(String(model || ''));
   }
 
   get useCompactPrompt() {
@@ -303,11 +304,16 @@ export class OpenAICompatibleProvider extends BaseLLMProvider {
   }
 
   _addTemperature(body, options) {
-    // GPT-5 / o-series only accept the default temperature (1). Sending
-    // anything else returns 400. Provider configs can impose
+    // GPT-5, GPT-6 Luna Pro, and o-series models only accept the default
+    // temperature. Provider configs can impose
     // the same omission for fixed-temperature models such as Kimi K2.5/K3.
     // In both cases, let the API apply its required default.
-    if (this._isNewOpenAIContract() || this.config.omitTemperature) return;
+    if (requiresOpenAIDefaultTemperature({
+      ...this.config,
+      providerName: this.config.providerName || this.name,
+      baseUrl: this.baseUrl,
+      model: this.model,
+    }) || this.config.omitTemperature) return;
     body.temperature = options.temperature ?? 0.7;
   }
 

diff --git a/src/firefox/src/providers/provider-compatibility.js b/src/firefox/src/providers/provider-compatibility.js
@@ -264,6 +264,21 @@ export function isNewOpenAIContractConfig(config = {}) {
   return isNewOpenAIContractModel(config.model);
 }
 
+/**
+ * GPT-6 Luna Pro uses Chat Completions with `max_tokens`, but rejects an
+ * explicit temperature. Keep this separate from the GPT-5/o-series contract,
+ * whose token-field migration is different.
+ */
+export function requiresOpenAIDefaultTemperature(config = {}) {
+  if (isNewOpenAIContractConfig(config)) return true;
+  const providerName = clean(config.providerName);
+  const model = clean(config.model);
+  if (providerName === 'openrouter') {
+    return /(?:^|\/)openai\/gpt-6-luna-pro(?:$|[-_.\/:])/.test(model);
+  }
+  return isOfficialOpenAIConfig(config) && /^gpt-6-luna-pro(?:$|[-_.:])/.test(model);
+}
+
 export function supportsOpenAIAskStreaming(config = {}) {
   if (!isOfficialOpenAIConfig(config)) return false;
 
@@ -274,6 +289,7 @@ export function supportsOpenAIAskStreaming(config = {}) {
   if (shouldUseOpenAIResponsesApi(config)) return true;
 
   return [
+    /^gpt-6-luna-pro(?:$|[-_.:])/,
     /^gpt-5\.5(?:$|-\d{4}-\d{2}-\d{2}$)/,
     /^gpt-5\.4(?:$|-\d{4}-\d{2}-\d{2}$|-(?:mini|nano)(?:$|-\d{4}-\d{2}-\d{2}$))/,
     /^gpt-5\.(?:1|2)(?:$|-\d{4}-\d{2}-\d{2}$)/,

diff --git a/src/firefox/src/ui/settings.js b/src/firefox/src/ui/settings.js
@@ -2626,6 +2626,7 @@ function renderProviders() {
         { key: 'apiKey', labelKey: 'st.provider.field.api_key', type: 'password', placeholder: 'sk-...' },
         { key: 'model', labelKey: 'st.provider.field.model', type: 'text', placeholder: 'gpt-5.6-terra',
           suggestions: [
+            'gpt-6-luna-pro',
             'gpt-5.6-terra',
             'gpt-5.6-sol',
             'gpt-5.6-luna',

diff --git a/test/run.js b/test/run.js
@@ -67181,7 +67181,7 @@ test('inferContextWindow: model-aware cloud/router defaults and local 16k fallba
     for (const providerName of ['lmstudio', 'jan', 'vllm', 'sglang', 'localai', 'gpt4all', 'local-openai-proxy']) {
       assert.equal(infer({ category: 'local', providerName, model: 'qwen3.7-plus' }), 16384);
     }
-    for (const model of ['gpt-5.6', 'gpt-5.6-sol', 'gpt-5.6-terra', 'gpt-5.6-luna']) {
+    for (const model of ['gpt-6-luna-pro', 'gpt-5.6', 'gpt-5.6-sol', 'gpt-5.6-terra', 'gpt-5.6-luna']) {
       assert.equal(infer({ category: 'cloud', providerName: 'openai', model }), 1050000);
     }
     assert.equal(infer({ category: 'cloud', providerName: 'openai', model: 'gpt-5.5-pro' }), 1050000);
@@ -71313,8 +71313,25 @@ test('built-in catalog defaults opt into vision when the model name is multimoda
   }
 });
 
-test('OpenAI settings list only the GPT-5.6 family and current dated models', () => {
+test('GPT-6 Luna Pro vision capability is mirrored for direct and routed OpenAI models', () => {
+  for (const Provider of [OpenAIProviderCh, OpenAIProviderFx]) {
+    for (const config of [
+      { providerName: 'openai', baseUrl: 'https://api.openai.com/v1', model: 'gpt-6-luna-pro' },
+      { providerName: 'openrouter', baseUrl: 'https://openrouter.ai/api/v1', model: 'openai/gpt-6-luna-pro' },
+    ]) {
+      assert.equal(new Provider(config).supportsVision, true, `${config.model} should receive screenshots`);
+    }
+    assert.equal(
+      new Provider({ providerName: 'openai', baseUrl: 'https://api.openai.com/v1', model: 'gpt-6-luna' }).supportsVision,
+      false,
+      'unlisted GPT-6 variants must not inherit Luna Pro vision capability',
+    );
+  }
+});
+
+test('OpenAI settings list GPT-6 Luna Pro, the GPT-5.6 family, and current dated models', () => {
   const expectedModels = [
+    'gpt-6-luna-pro',
     'gpt-5.6-terra',
     'gpt-5.6-sol',
     'gpt-5.6-luna',
@@ -71755,6 +71772,7 @@ test('Responses reasoning effort is normalized for GPT-5 Pro model constraints',
 
 test('official OpenAI Ask streaming follows the documented model capability', () => {
   const supportedModels = [
+    'gpt-6-luna-pro',
     'gpt-5.6-terra',
     'gpt-5.5',
     'gpt-5.5-2026-04-23',
@@ -73848,7 +73866,7 @@ test('OpenAI-compatible local providers always use legacy request token fields',
   }
 });
 
-test('router-prefixed OpenAI reasoning ids use the advertised Chat Completions contract', () => {
+test('OpenAI reasoning and GPT-6 ids use the advertised Chat Completions contract', () => {
   const messages = [{ role: 'user', content: 'hello' }];
   const newContractModels = ['openai/gpt-5.6-terra', 'openai/gpt-5.6-terra:batch', 'openai/gpt-5.6-terra:image'];
   const legacyContractModels = [
@@ -73874,6 +73892,25 @@ test('router-prefixed OpenAI reasoning ids use the advertised Chat Completions c
     for (const model of legacyContractModels) {
       assert.equal(compatibility.isNewOpenAIContractConfig({ providerName: 'openrouter', model }), false, `${model} should keep the legacy contract`);
     }
+    assert.equal(
+      compatibility.requiresOpenAIDefaultTemperature({ providerName: 'openrouter', model: 'openai/gpt-6-luna-pro' }),
+      true,
+      'OpenRouter GPT-6 Luna Pro should omit temperature',
+    );
+    assert.equal(
+      compatibility.requiresOpenAIDefaultTemperature({
+        providerName: 'openai',
+        baseUrl: 'https://api.openai.com/v1',
+        model: 'gpt-6-luna-pro',
+      }),
+      true,
+      'official GPT-6 Luna Pro should omit temperature',
+    );
+    assert.equal(
+      compatibility.requiresOpenAIDefaultTemperature({ providerName: 'custom-proxy', model: 'openai/gpt-6-luna-pro' }),
+      false,
+      'a custom proxy must not inherit GPT-6 Luna Pro temperature behavior',
+    );
   }
 
   for (const Provider of [OpenAIProviderCh, OpenAIProviderFx]) {
@@ -73903,6 +73940,28 @@ test('router-prefixed OpenAI reasoning ids use the advertised Chat Completions c
       assert.equal(body.temperature, 0.7, `${model} should keep the default temperature`);
     }
 
+    for (const config of [
+      {
+        label: 'OpenRouter GPT-6 Luna Pro',
+        providerName: 'openrouter',
+        baseUrl: 'https://openrouter.ai/api/v1',
+        model: 'openai/gpt-6-luna-pro',
+      },
+      {
+        label: 'official GPT-6 Luna Pro',
+        providerName: 'openai',
+        baseUrl: 'https://api.openai.com/v1',
+        model: 'gpt-6-luna-pro',
+      },
+    ]) {
+      const provider = new Provider(config);
+      assert.equal(provider._isNewOpenAIContract(), false, `${config.label} should keep the Chat Completions token contract`);
+      const body = provider._buildChatCompletionsBody(messages, { maxTokens: 123, temperature: 0.2 }, false);
+      assert.equal(body.max_tokens, 123, `${config.label} should use max_tokens`);
+      assert.equal(body.max_completion_tokens, undefined, `${config.label} must not send max_completion_tokens`);
+      assert.equal(body.temperature, undefined, `${config.label} must omit temperature`);
+    }
+
     // gpt-4.1 accepts both parameter sets; it must stay legacy so explicit
     // temperatures (deterministic planner/compaction paths) are not dropped.
     const gpt41 = new Provider({