Update README with latest models (#325)

Co-authored-by: cheahjs <818368+cheahjs@users.noreply.github.com>

README.md

@@ -53,7 +53,6 @@ Models share a common quota.
 - [Hermes 3 Llama 3.1 405B](https://openrouter.ai/nousresearch/hermes-3-llama-3.1-405b:free)
 - [Llama 3.2 3B Instruct](https://openrouter.ai/meta-llama/llama-3.2-3b-instruct:free)
 - [Llama 3.3 70B Instruct](https://openrouter.ai/meta-llama/llama-3.3-70b-instruct:free)
-- [baidu/cobuddy:free](https://openrouter.ai/baidu/cobuddy:free)
 - [cognitivecomputations/dolphin-mistral-24b-venice-edition:free](https://openrouter.ai/cognitivecomputations/dolphin-mistral-24b-venice-edition:free)
 - [deepseek/deepseek-v4-flash:free](https://openrouter.ai/deepseek/deepseek-v4-flash:free)
 - [google/gemma-4-26b-a4b-it:free](https://openrouter.ai/google/gemma-4-26b-a4b-it:free)
@@ -61,6 +60,7 @@ Models share a common quota.
 - [liquid/lfm-2.5-1.2b-instruct:free](https://openrouter.ai/liquid/lfm-2.5-1.2b-instruct:free)
 - [liquid/lfm-2.5-1.2b-thinking:free](https://openrouter.ai/liquid/lfm-2.5-1.2b-thinking:free)
 - [minimax/minimax-m2.5:free](https://openrouter.ai/minimax/minimax-m2.5:free)
+- [moonshotai/kimi-k2.6:free](https://openrouter.ai/moonshotai/kimi-k2.6:free)
 - [nvidia/nemotron-3-nano-30b-a3b:free](https://openrouter.ai/nvidia/nemotron-3-nano-30b-a3b:free)
 - [nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free](https://openrouter.ai/nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free)
 - [nvidia/nemotron-3-super-120b-a12b:free](https://openrouter.ai/nvidia/nemotron-3-super-120b-a12b:free)