GPT-5 Chat is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.
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GPT-5 Chat is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications. It is published by OpenAI and catalogued here from OpenRouter.
OpenAI: GPT-5 Chat accepts up to 128K tokens of context and returns up to 16.384K output tokens.
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GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
OpenAI: GPT-5.6 Luna ProGPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
OpenAI: GPT-5.6 Terra ProGPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
OpenAI: GPT-5.6 Sol ProGPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode