poe: add GPT-5.4-Nano and GPT-5.4-Mini models

Add 2 new OpenAI models from Poe API:

GPT-5.4-Nano (released 2026-03-11):
- Reasoning support, 400K context, 128K output
- Cost: $0.18/M input, $1.1/M output
- Modalities: text, image

GPT-5.4-Mini (released 2026-03-12):
- Reasoning support, 400K context, 128K output
- Cost: $0.68/M input, $4/M output
- Modalities: text, image

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: fhennerkes

providers/poe/models/openai/gpt-5.4-mini.toml

@@ -0,0 +1,22 @@
+name = "GPT-5.4-Mini"
+release_date = "2026-03-12"
+last_updated = "2026-03-12"
+attachment = true
+reasoning = true
+temperature = false
+open_weights = false
+tool_call = true
+
+[cost]
+input = 0.68
+output = 4
+cache_read = 0.068
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[modalities]
+input = ["text", "image"]
+output = ["text"]

providers/poe/models/openai/gpt-5.4-nano.toml

@@ -0,0 +1,22 @@
+name = "GPT-5.4-Nano"
+release_date = "2026-03-11"
+last_updated = "2026-03-11"
+attachment = true
+reasoning = true
+temperature = false
+open_weights = false
+tool_call = true
+
+[cost]
+input = 0.18
+output = 1.1
+cache_read = 0.018
+
+[limit]
+context = 400_000
+input = 272_000
+output = 128_000
+
+[modalities]
+input = ["text", "image"]
+output = ["text"]