llama-index-llms-openai
llama-index llms openai integration
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has low installation friction, carries no known vulnerabilities, and uses a permissive MIT license. Install it if you are building with llama-index-core and want to use OpenAI models; it is the standard integration point for that use case. The only gotcha is the requirement for a valid OpenAI API key and Python 3.10 or later.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires a valid OpenAI API key set via OPENAI_API_KEY environment variable or passed at instance creation; Python 3.10 or later (requires_python: >=3.10,<4.0).
- Low installation friction with only 2 runtime dependencies.
- Actively maintained with a release 24 days ago.
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions, suitable for both open-source and commercial projects.
last release 2026-07-21 (24 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 39,166,216 downloads/mo, #701 on PyPI
Alternatives
Verify before relying
pip install llama-index-llms-openai
import os
os.environ["OPENAI_API_KEY"] = "sk-..."
from llama_index.llms.openai import OpenAI
llm = OpenAI()
resp = llm.complete("Paul Graham is ")
print(resp)- Whether the package supports all current OpenAI models or has model-specific limitations.
- Rate limiting or quota handling behavior when used with high-volume requests.
- Cost implications and billing integration with OpenAI's API pricing.
What it is and what it does
This package provides a bridge between llama-index-core and OpenAI's language models, allowing developers to use OpenAI's models within applications built on llama-index-core. It wraps OpenAI's API behind a standard LLM interface, supporting both synchronous and asynchronous calls, streaming responses, and chat-based interactions.
The integration handles API key management at both the environment and per-instance level, supports model selection, and provides methods for text completion, chat messaging, and streaming variants of both. It depends on llama-index-core for the base LLM abstraction and openai for direct API communication, keeping the dependency footprint minimal.
Use it for
- Build retrieval-augmented generation pipelines using llama-index-core with OpenAI models as the language backend.
- Stream chat responses in real-time applications where immediate feedback is needed.
- Use different OpenAI models or API keys for different LLM instances within the same application.
- Generate text completions for prompts using OpenAI models integrated into a workflow.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has low installation friction, carries no known vulnerabilities, and uses a permissive MIT license. Install it if you are building with llama-index-core and want to use OpenAI models; it is the standard integration point for that use case. The only gotcha is the requirement for a valid OpenAI API key and Python 3.10 or later.
Install
llama-index-llms-openai on PyPI
Before you install
Low installation friction with only 2 runtime dependencies. Actively maintained with a release 24 days ago.
Requires a valid OpenAI API key set via OPENAI_API_KEY environment variable or passed at instance creation; Python 3.10 or later (requires_python: >=3.10,<4.0).
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions, suitable for both open-source and commercial projects.
Quickstart
pip install llama-index-llms-openai
import os
os.environ["OPENAI_API_KEY"] = "sk-..."
from llama_index.llms.openai import OpenAI
llm = OpenAI()
resp = llm.complete("Paul Graham is ")
print(resp)Verify before relying
- Whether the package supports all current OpenAI models or has model-specific limitations.
- Rate limiting or quota handling behavior when used with high-volume requests.
- Cost implications and billing integration with OpenAI's API pricing.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <4.0,>=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesllama-index-coreopenai |
| Maintenance | Actively maintained 24 days since the last release |
| First released | |
| Downloads | 39,166,216 / month, #701 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
Evidence: llama_index_llms_openai-0.7.10-py3-none-any.whl
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See also ai21 · llama-index-llms-azure-openai · llama-index-llms-google-genai · llama-index-llms-litellm · llama-index-llms-ollama · open-interpreter · llama-index-llms-bedrock · llama-index-llms-anthropic · llama-index-llms-openai-like · llama-index-llms-bedrock-converse