The v0.14.22 release updates `llama-index-llms-openai` to support `gpt-5.5` and `gpt-5.5-2026-04-23`, extending the default OpenAI model lineup available to LlamaIndex users.
Scattered source updates, isolated context, and manual follow-up across multiple feeds.
Added GPT-5.5 model entries and routing support in the `llama-index-llms-openai` package so applications can select and call the new OpenAI model variants via existing integration paths without custom adapter changes.
Developers using LlamaIndex with OpenAI can now run newer GPT-5.5 models through the same llms-openai code path, so they can upgrade model quality/features without rewriting their integration, while rollout teams should recheck cost, latency, and output-format behavior in real traffic to catch any compatibility or budget regressions. Continued monitoring should focus on prompt reliability, streaming response stability, and any changes in rate-limit or tool-call semantics specific to the new model versions.
Developers using LlamaIndex with OpenAI can now run newer GPT-5.5 models through the same llms-openai code path, so they can upgrade model quality/features without rewriting their integration, while rollout teams should recheck cost, latency, and output-format behavior in real traffic to catch any compatibility or budget regressions. Continued monitoring should focus on prompt reliability, streaming response stability, and any changes in rate-limit or tool-call semantics specific to the new model versions.