poe: add GPT-5.3-Codex model

Author: fhennerkes

providers/poe/models/openai/gpt-5.3-codex.toml

@@ -0,0 +1,21 @@
+name = "GPT-5.3-Codex"
+release_date = "2026-02-10"
+last_updated = "2026-02-10"
+attachment = true
+reasoning = true
+temperature = false
+open_weights = false
+tool_call = true
+
+[cost]
+input = 1.6
+output = 13
+cache_read = 0.16
+
+[limit]
+context = 400_000
+output = 128_000
+
+[modalities]
+input = ["text", "image"]
+output = ["text"]