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Outlines review

Structured Outputs

Updated Nov 1, 2026. Review written Nov 1, 2026 from the project's own sources; usage data refreshed every Monday.

Outlines at a glance

Category
Model SDKs and gateways
Website
dottxt-ai.github.io/outlines

Is Outlines growing? Usage data

In the week of Oct 25–31, 2026, Outlines ranked #297 on the Devtoolwatch Board and #18 in Model SDKs and gateways, with a momentum score of 32 out of 100. Its main package had 371k downloads that week, +12% against its own 4-week average.

New GitHub stars per week for Outlines12 weeks from Aug 9, 2026: 87, 49, 45, 45, 39, 56, 47, 19, 26, 42, 29, 22 new stars, an average of 42 a week.Aug 9week of Oct 25
New GitHub stars per week for the last 12 weeks, from GitHub's stargazer history (today's stargazers by the week they starred).
Show the weekly numbers
New GitHub stars per week for Outlines
Week ofNew stars
Aug 9, 202687
Aug 16, 202649
Aug 23, 202645
Aug 30, 202645
Sep 6, 202639
Sep 13, 202656
Sep 20, 202647
Sep 27, 202619
Oct 4, 202626
Oct 11, 202642
Oct 18, 202629
Oct 25, 202622

The Board ranks tools by four signals each week: new stars, new stars for the repo's size, added downloads and download growth beyond the market. How the ranking works.

Outlines alternatives

Other LLM SDKs and gateways on the Board in the week of Oct 25–31, 2026, by momentum:

Model SDKs and gateways ranked by momentum, the week of Oct 25–31, 2026
RankToolStarsDownloads/wk
#1thinking-orbsthinking-orbs is a React library of dotted, animated thought-orb loading indicators for AI and agent user interfaces.3.9k1.4M
#2HeadroomHeadroom compresses tool outputs, logs, files, and RAG chunks locally before they reach the LLM, as a library, proxy, or MCP server.78.5k125.8k
#3LiteLLMLiteLLM is an open source AI gateway and Python SDK that calls 100+ LLM providers through one OpenAI-format interface.62.5k23.1M
#4Honcho Memory library for building stateful agents7.9k–
#5Anthropic SDKAnthropic SDK is the official Python library for calling the Claude API from Python applications.4k111M
#6Hugging Face HubHugging Face Hub is the official CLI and Python client for downloading, uploading and managing models, datasets and Spaces on the…4k68.3M

All LLM SDKs and gateways, ranked

Outlines FAQ

How popular is Outlines?

Outlines has 16k GitHub stars as of Nov 1, 2026. It gained 22 new stars in the week of Oct 25–31, 2026, against a 12-week average of 42 a week. Its main package had 371k downloads that week, +12% against its own 4-week average. That made it #18 among LLM SDKs and gateways on the Devtoolwatch Board.

What are the best alternatives to Outlines?

Other LLM SDKs and gateways on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: thinking-orbs (#1), Headroom (#2), LiteLLM (#3), Honcho (#4), Anthropic SDK (#5). The alternatives table above has their numbers.

Sources

  1. Devtoolwatch Board, the week of Oct 25–31, 2026

Outlines README badge

Maintainers can show the tool's weekly Board rank in their README:

Devtoolwatch badge for Outlines

[![Devtoolwatch](https://index.devtoolwatch.com/badge/outlines.svg)](https://index.devtoolwatch.com/tools/outlines/)

How this page is made: Devtoolwatch writes each review from the project's README, releases, package metadata and website, with an AI model, then checks every claim against the source it cites and drops what the sources don't support. The numbers come from Devtoolwatch's daily GitHub snapshots, GitHub's stargazer history, and the npm and PyPI download APIs. Spotted an error? Email [email protected].