openai-api-rs
Library Listed
OpenAI API client library for Rust (unofficial)
- Downloads
- 46,400
- Dependents
- 33
- Stars
- 485
- Forks
- 93
- Contributors
- 33
- Commits
- 409
- Latest release
- 10.0.2 ·
About
OpenAI API client library for Rust (unofficial)
The OpenAI API client Rust library provides convenient access to the OpenAI API from Rust applications.
Check out the docs.rs.
Installation:
Cargo.toml
[dependencies]
openai-api-rs = "10.0.1"
Usage
The library needs to be configured with your account's secret key, which is available on the website. We recommend setting it as an environment variable. Here's an example of initializing the library with the API key loaded from an environment variable and creating a completion:
Set OPENAI_API_KEY or OPENROUTER_API_KEY to environment variable
$ export OPENAI_API_KEY=sk-xxxxxxx
or
$ export OPENROUTER_API_KEY=sk-xxxxxxx
Create OpenAI client
let api_key = env::var("OPENAI_API_KEY").unwrap().to_string();
let mut client = OpenAIClient::builder().with_api_key(api_key).build()?;
Create OpenRouter client
let api_key = env::var("OPENROUTER_API_KEY").unwrap().to_string();
let mut client = OpenAIClient::builder()
.with_endpoint("https://openrouter.ai/api/v1")
.with_api_key(api_key)
.build()?;
Read the full README
Create request
let req = ChatCompletionRequest::new(
GPT4_O.to_string(),
vec![chat_completion::ChatCompletionMessage {
role: chat_completion::MessageRole::user,
content: chat_completion::Content::Text(String::from("What is bitcoin?")),
name: None,
tool_calls: None,
tool_call_id: None,
}],
);
Send request
let result = client.chat_completion(req)?;
println!("Content: {:?}", result.choices[0].message.content);
for (key, value) in client.headers.unwrap().iter() {
println!("{}: {:?}", key, value);
}
Set OPENAI_API_BASE to environment variable (optional)
$ export OPENAI_API_BASE=https://api.openai.com/v1
Example of chat completion
use openai_api_rs::v1::api::OpenAIClient;
use openai_api_rs::v1::chat_completion::{self, ChatCompletionRequest};
use openai_api_rs::v1::common::GPT4_O;
use std::env;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let api_key = env::var("OPENAI_API_KEY").unwrap().to_string();
let mut client = OpenAIClient::builder().with_api_key(api_key).build()?;
let req = ChatCompletionRequest::new(
GPT4_O.to_string(),
vec![chat_completion::ChatCompletionMessage {
role: chat_completion::MessageRole::user,
content: chat_completion::Content::Text(String::from("What is bitcoin?")),
name: None,
tool_calls: None,
tool_call_id: None,
}],
);
let result = client.chat_completion(req).await?;
println!("Content: {:?}", result.choices[0].message.content);
for (key, value) in client.headers.unwrap().iter() {
println!("{}: {:?}", key, value);
}
Ok(())
}
Example for OpenRouter
use openai_api_rs::v1::api::OpenAIClient;
use openai_api_rs::v1::chat_completion::{self, ChatCompletionRequest};
use openai_api_rs::v1::common::GPT4_O_MINI;
use std::env;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let api_key = env::var("OPENROUTER_API_KEY").unwrap().to_string();
let mut client = OpenAIClient::builder()
.with_endpoint("https://openrouter.ai/api/v1")
.with_api_key(api_key)
.build()?;
let req = ChatCompletionRequest::new(
GPT4_O_MINI.to_string(),
vec![chat_completion::ChatCompletionMessage {
role: chat_completion::MessageRole::user,
content: chat_completion::Content::Text(String::from("What is bitcoin?")),
name: None,
tool_calls: None,
tool_call_id: None,
}],
);
let result = client.chat_completion(req).await?;
println!("Content: {:?}", result.choices[0].message.content);
for (key, value) in client.headers.unwrap().iter() {
println!("{}: {:?}", key, value);
}
Ok(())
}
More Examples: examples
Check out the full API documentation for examples of all the available functions.
Supported APIs
- [x] Completions
- [x] Chat
- [x] Edits
- [x] Images
- [x] Embeddings
- [x] Audio
- [x] Files
- [x] Fine-tuning
- [x] Moderations
- [x] Function calling
- [x] Assistants
- [x] Batch
- [x] Realtime
- [x] Responses
License
This project is licensed under MIT license.
Compatibility
- Runs on
- GPU support unknown
What shows it
- no dependency or feature matches a backend row
- Native code
- None found
- No native code found
- Python bindings
- No Python binding crate found
- License
- MIT
Compare with similar projects
Order: strongest tier first, then most downloads, then name, with unmeasured values last. A library counts downloads over 30 days. An app counts binary downloads per release. An app with none counts its crate downloads over 30 days. ML Rust runs this catalogue, so its closest project always gets a row.
| Project | Downloads | Dependents | Stars | Latest release | Runs on (GPU) | Native code | License |
|---|---|---|---|---|---|---|---|
|
OpenAI API client library for Rust (unofficial) |
46,400 downloads over 30 days | 33 | 485 | 10.0.2 | GPU support unknown | No native code found | MIT |
|
async-openai Featured
Rust library for OpenAI |
1,302,033 downloads over 30 days | 275 | 2,031 | 0.43.0 | GPU support unknown | No native code found | MIT |
|
rust-genai Featured
Multi-AI Providers Library for Rust. (OpenAI, Gemini, Anthropic, DeepSeek, Ollama, OMLX, AWS Bedrock, Vertex, Xai, Groq, Kimi, GLM and many more) |
118,643 downloads over 30 days | 81 | 938 | 0.7.3 | GPU support unknown | No native code found | Apache-2.0 OR MIT |
|
ollama-rs Featured
A Rust library for interacting with the Ollama API |
45,579 downloads over 30 days | 68 | 1,061 | 0.3.6 | GPU support unknown | No native code found | MIT |
|
openai Listed
An unofficial Rust library for the OpenAI API. |
10,846 downloads over 30 days | 13 | 128 | 1.1.1 | GPU support unknown | No native code found | MIT |
|
Mistral AI API client library for Rust (unofficial). |
518 downloads over 30 days | 4 | 48 | 0.14.0 | GPU support unknown | No native code found | Apache-2.0 |
|
Inference server for LLMs, speech and embeddings: OpenAI-compatible routes with streaming, plus speech synthesis (TTS) and transcription (ASR). Serves Llama, Mistral, Qwen, Mamba2, MLA+MoE and hybrid models from SafeTensors, AWQ, GPTQ and GGUF. |
8 binary downloads per release | Not applicable | 7 | 0.7.1 | CUDA, WebGPU | Binds native code: ring (feature distributed) | Apache-2.0 |
Why ListedNo archive, New or Featured rule places it, so it is Listed.
What it lacks for Featured
- It has 4 active dependents and 1 new dependents in 365 days. Featured needs 11 active dependents or 9 new dependents in 365 days. The repository route reads 485 stars, 93 forks and 33 contributors. It needs 4,539 stars, 434 forks and 79 contributors together.
What else the check found
- The last activity is on 3 Oct 2026, 37 days ago. The rules expect an update within 365 days. Dormancy rule
Exact rules: Listed, Featured library. The check on applied thresholds version 9.
Every rule outcome, as the check records it
expected-interval: version 10.0.2 base 300, raised to the 365-day floor: E = 365 daysdormancy: last activity 2026-10-03, 37 days ago, E = 365: activefeatured: not featured: active_users 4 < 11 and new_adopters 1 < 9 and repository route stars 485 (needs 4539), forks 93 (needs 434), contributors 33 (needs 79)listed: listed: no archive, new or featured rule applies
Measurements and sources
Each signal row shows the raw value, its source and the fetch date. The Sources list gathers every distinct source on this page. Movement needs more history.
Sources6 sources
- Description: the crates.io description
- crates.io database dump, fetched
- RustSec advisory database, fetched
- GitHub repository, fetched
- crates.io package, fetched
- GitHub contributors, fetched
Adoption4 active dependents, 1 new dependents in 365 days1 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Active dependents | 4 | crates.io database dump | Yes | |
| New dependents (365 days) | 1 | crates.io database dump | Yes | |
| Peak active dependents | 14.5 | crates.io database dump | Yes | |
| Active dependents as a share of the peak | 0.7625 | crates.io database dump | Yes | |
| Binary downloads per release | Not measured | Yes |
MaintenanceLatest human commit: 37 days ago3 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Latest human commit | 2026-10-03 | GitHub repository | Yes | |
| Latest release | 2026-10-03 | crates.io database dump | Yes | |
| First release | 2022-12-12 | crates.io database dump | Yes | |
| Latest version | 10.0.2 | crates.io database dump | Yes | |
| Days the oldest outside issue waits for a reply | 670 | GitHub repository | Yes | |
| Maintainer replies over 365 days | 13 | GitHub repository | Yes | |
| Repository archived | false | GitHub repository | Yes | |
| Repository gone | false | GitHub repository | Yes | |
| Release commit or manifest in the repo | true | crates.io package | Yes | |
| Published docs | true | crates.io database dump | Yes | |
| Latest release fails cargo check | Not measured | Yes | ||
| Build check date | Not measured | Yes | ||
| Build check toolchain | Not measured | Yes |
SecurityUnpatched vulnerabilities: none
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Unpatched vulnerabilities past the grace window | none | RustSec advisory database | Yes | |
| RustSec unmaintained advisory | none | RustSec advisory database | Yes | |
| Deprecation notice | none | crates.io database dump | Yes | |
| Deprecated requirement | none | crates.io database dump | Yes |
Distribution97 releases, 46,400 downloads over 30 days5 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Releases | 97 | crates.io database dump | Yes | |
| Downloads over 30 days | 46400 | crates.io database dump | Yes | |
| Binary downloads over the last 3 releases | Not measured | Yes | ||
| Homebrew installs on request over 365 days | Not measured | Yes | ||
| Repology repository families | Not measured | Yes | ||
| Docker pull growth over 90 days | Not measured | Yes | ||
| Docker pulls at the growth baseline | Not measured | Yes | ||
| Every version a prerelease | false | crates.io database dump | Yes | |
| Every version 0.0.x | false | crates.io database dump | Yes | |
| Every version yanked | false | crates.io database dump | Yes | |
| Crate deleted from crates.io | false | crates.io database dump | Yes |
Repository485 stars, 93 forks, 33 contributors, 409 commits. Stars alone never qualify a project.
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| GitHub stars | 485 | GitHub repository | Yes — one part of the repository route | |
| GitHub forks | 93 | GitHub repository | Yes — one part of the repository route | |
| Contributors with a GitHub account | 33 | GitHub contributors | Yes — one part of the repository route | |
| Commits on the default branch | 409 | GitHub repository | No | |
| Repository's main crate left out of the entry | none | crates.io database dump | Yes |
Facts that never count
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| License | MIT | crates.io database dump | No | |
| Runs on, from listed crates and their direct dependencies | GPU support unknown | crates.io database dump | No | |
| What shows each backend | no dependency or feature matches a backend row | crates.io database dump | No | |
| Native code, from listed crates and their dependencies | No native code found | crates.io database dump | No | |
| Python bindings, from direct dependencies of listed crates | No Python binding crate found | crates.io database dump | No | |
| Crates that depend on a listed crate directly | 33 | crates.io database dump | No |
Corrections and review history
No correction applies to this entry.
Judgments
A judgment enters only through an approved issue and a merged pull request.
No judgment applies to this entry.