feat: add context lengths for Jan 25 openai models

kani/engines/openai/engine.py

@@ -18,11 +18,16 @@
 
 # https://platform.openai.com/docs/models
 CONTEXT_SIZES_BY_PREFIX = [
+    # TODO is gpt-3.5-turbo-0125 16k?
     ("gpt-3.5-turbo-1106", 16384),
     ("gpt-3.5-turbo-16k", 16384),
     ("gpt-3.5-turbo", 4096),
+    # gpt-4-turbo models aren't prefixed differently...
+    # TODO maybe make the default gpt-4 128k and keep the pre-turbo ones at 8k?
     ("gpt-4-1106", 128000),
+    ("gpt-4-0125", 128000),
     ("gpt-4-vision", 128000),
+    ("gpt-4-turbo", 128000),
     ("gpt-4-32k", 32768),
     ("gpt-4", 8192),
     # fine-tunes