Changelog/OpenAI: GPT-3.5 Turbo 16k releasedReleaseApril 18, 2026OpenAI: GPT-3.5 Turbo 16k releasedOpenAI: GPT-3.5 Turbo 16k discovered via OpenRouter. Provider: OpenAI.Provider: OpenAIModel: OpenAI: GPT-3.5 Turbo 16k