Add GPT-5.1 family support

Author: PeterDaveHello

app/openai_constants.py

@@ -33,6 +33,11 @@
 GPT_5_MODEL = "gpt-5"
 GPT_5_MINI_MODEL = "gpt-5-mini"
 GPT_5_NANO_MODEL = "gpt-5-nano"
+GPT_5_1_CHAT_LATEST_MODEL = "gpt-5.1-chat-latest"
+GPT_5_1_MODEL = "gpt-5.1"
+GPT_5_1_2025_11_13_MODEL = "gpt-5.1-2025-11-13"
+GPT_5_1_CODEX_MODEL = "gpt-5.1-codex"
+GPT_5_1_CODEX_MINI_MODEL = "gpt-5.1-codex-mini"
 O3_MODEL = "o3"
 O4_MINI_MODEL = "o4-mini"
 GPT_5_2025_08_07_MODEL = "gpt-5-2025-08-07"
@@ -77,11 +82,15 @@
     GPT_4O_MINI_2024_07_18_MODEL: (3, 1),
     # GPT-5 chat latest
     GPT_5_CHAT_LATEST_MODEL: (3, 1),
+    GPT_5_1_CHAT_LATEST_MODEL: (3, 1),
     GPT_5_SEARCH_API_2025_10_14_MODEL: (3, 1),
     # GPT-5 family (dated)
     GPT_5_2025_08_07_MODEL: (3, 1),
     GPT_5_MINI_2025_08_07_MODEL: (3, 1),
     GPT_5_NANO_2025_08_07_MODEL: (3, 1),
+    GPT_5_1_2025_11_13_MODEL: (3, 1),
+    GPT_5_1_CODEX_MODEL: (3, 1),
+    GPT_5_1_CODEX_MINI_MODEL: (3, 1),
     # Reasoning models (dated)
     O3_2025_04_16_MODEL: (3, 1),
     O4_MINI_2025_04_16_MODEL: (3, 1),
@@ -103,6 +112,7 @@
     GPT_5_MODEL: GPT_5_2025_08_07_MODEL,
     GPT_5_MINI_MODEL: GPT_5_MINI_2025_08_07_MODEL,
     GPT_5_NANO_MODEL: GPT_5_NANO_2025_08_07_MODEL,
+    GPT_5_1_MODEL: GPT_5_1_2025_11_13_MODEL,
     GPT_5_SEARCH_API_MODEL: GPT_5_SEARCH_API_2025_10_14_MODEL,
     O3_MODEL: O3_2025_04_16_MODEL,
     O4_MINI_MODEL: O4_MINI_2025_04_16_MODEL,
@@ -134,11 +144,15 @@
     GPT_4_1_NANO_2025_04_14_MODEL: 1048576,
     # GPT-5 chat latest
     GPT_5_CHAT_LATEST_MODEL: 128000,
+    GPT_5_1_CHAT_LATEST_MODEL: 128000,
     GPT_5_SEARCH_API_2025_10_14_MODEL: 128000,
     # GPT-5 family (dated)
     GPT_5_2025_08_07_MODEL: 128000,
     GPT_5_MINI_2025_08_07_MODEL: 128000,
     GPT_5_NANO_2025_08_07_MODEL: 128000,
+    GPT_5_1_2025_11_13_MODEL: 128000,
+    GPT_5_1_CODEX_MODEL: 128000,
+    GPT_5_1_CODEX_MINI_MODEL: 128000,
     # Reasoning models (dated)
     O3_2025_04_16_MODEL: 128000,
     O4_MINI_2025_04_16_MODEL: 128000,

app/slack_ui.py

@@ -8,6 +8,10 @@
     GPT_4O_MINI_MODEL,
     GPT_4_1_MODEL,
     GPT_4_1_MINI_MODEL,
+    GPT_5_1_CHAT_LATEST_MODEL,
+    GPT_5_1_MODEL,
+    GPT_5_1_CODEX_MODEL,
+    GPT_5_1_CODEX_MINI_MODEL,
     GPT_5_CHAT_LATEST_MODEL,
     GPT_5_MODEL,
     GPT_5_MINI_MODEL,
@@ -440,6 +444,22 @@ def build_configure_modal(context: BoltContext) -> dict:
         )
 
     options = [
+        {
+            "text": {"type": "plain_text", "text": "GPT-5.1-chat-latest"},
+            "value": GPT_5_1_CHAT_LATEST_MODEL,
+        },
+        {
+            "text": {"type": "plain_text", "text": "GPT-5.1"},
+            "value": GPT_5_1_MODEL,
+        },
+        {
+            "text": {"type": "plain_text", "text": "GPT-5.1-codex"},
+            "value": GPT_5_1_CODEX_MODEL,
+        },
+        {
+            "text": {"type": "plain_text", "text": "GPT-5.1-codex-mini"},
+            "value": GPT_5_1_CODEX_MINI_MODEL,
+        },
         {
             "text": {"type": "plain_text", "text": "GPT-5-chat-latest"},
             "value": GPT_5_CHAT_LATEST_MODEL,

tests/model_constants_test.py

@@ -6,12 +6,19 @@
     MODEL_CONTEXT_LENGTHS,
     GPT_4_MODEL,
     GPT_4_0613_MODEL,
+    GPT_5_1_MODEL,
+    GPT_5_1_2025_11_13_MODEL,
 )
 
 def test_alias_resolution():
     """Tests that a model alias resolves to its specific version."""
     assert resolve_model_alias(GPT_4_MODEL) == GPT_4_0613_MODEL
 
+
+def test_gpt_5_1_alias_resolution():
+    """Ensures the GPT-5.1 alias resolves to the dated release."""
+    assert resolve_model_alias(GPT_5_1_MODEL) == GPT_5_1_2025_11_13_MODEL
+
 def test_unregistered_model_fails():
     """Tests that resolving an unregistered model raises NotImplementedError."""
     # First, test the resolver