chore: sync model pricing from OpenRouter API

providers/nex-agi.toml

@@ -0,0 +1,18 @@
+# nex-agi — auto-generated from OpenRouter API
+
+[provider]
+id = "nex-agi"
+display_name = "Nex Agi"
+api_key_env = "OPENROUTER_API_KEY"
+base_url = "https://openrouter.ai/api/v1"
+key_required = true
+
+[[models]]
+id = "deepseek-v3.1-nex-n1"
+display_name = "Nex AGI: DeepSeek V3.1 Nex N1"
+tier = "fast"
+context_window = 131072
+max_output_tokens = 163840
+input_cost_per_m = 0.135
+output_cost_per_m = 0.5
+supports_streaming = true