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GPT API Free: review, pricing, security and alternatives

GPT API Free is an open-source agent infrastructure component published by ChatAnywhere, in the agent infrastructure family. ChatAnywhere provides a hosted API service for accessing several language model families through free and paid usage options. Its repository has 44,792 stars and its last commit is from September 7, 2026.

Open sourceActively maintainedLow risk

What GPT API Free does

GPT API Free belongs to the agent infrastructure family: technical building blocks for agents: memory, execution sandboxes, model gateways, observability, evaluation. On our grid it ranks #25 of the 28 projects of this family listed in the directory.

It is not an agent in itself: it is a component other agents use (memory, isolated execution, web access, model gateway or monitoring). You pick it based on the agent or framework it has to equip.

You use it from: API. Usable models: GPT (OpenAI), Claude (Anthropic), DeepSeek, Gemini (Google), and Grok (xAI). It is a service hosted by the vendor: your data goes through its servers.

Who is GPT API Free for?

It is for teams running agents in production that need a reliable component: isolated execution, memory, model gateway or observability. Typical tasks people give it:

  • isolate code generated by an agent
  • track model call costs and errors
  • give an agent long-term memory

Access and human control

Its documentation does not detail the access granted to the agent: check the settings before connecting it to your accounts.

We could not establish whether it asks for human approval before sensitive actions: test it first on an unimportant account or folder.

Drive a web browserDrive a web browser : 7 %7 %Call online services and APIsCall online services and APIs : 11 %11 %
Share of the 28 agents in the family that have each access, according to their documentation. In orange, GPT API Free's access.

GPT API Free pricing

The code is free, under the MIT licence.

Getting started with GPT API Free

  1. Install it by following the repository README.
  2. Start with the minimal example from the docs, then add one tool at a time and check what the agent does with it.
  3. Give it a short, checkable task, review the result and its action log, then raise the difficulty step by step.

Security: risk level

An infrastructure component sees prompts, keys and data pass through: self-host it or read the service's retention policy.

Points found for GPT API Free:

  • Data held by the vendor: files, messages and credentials given to the agent go through its servers; read its retention policy.

Three habits: least privilege (minimal rights, dedicated keys), human approval for irreversible actions, a sandbox for code execution. The AI agent security check reviews your setup in a few minutes.

Project activity and releases

Created on April 23, 2023, the chatanywhere/GPT_API_free repository has 44,792 stars, 2,752 forks and 2 open issues, with 154 commits in total. Last change 2 months ago.

Over the last 52 weeks: 22 commits, an average of 0.4 per week.

Nov 2, : 0 · Nov 2, 2025Nov 2,Nov 9, : 0 · Nov 9, 2025Nov 16, : 0 · Nov 16, 2025Nov 23, : 1 · Nov 23, 2025Nov 30, : 0 · Nov 30, 2025Dec 7, : 0 · Dec 7, 2025Dec 14, : 1 · Dec 14, 2025Dec 21, : 1 · Dec 21, 2025Dec 28, : 0 · Dec 28, 2025Dec 28,Jan 4, : 0 · Jan 4, 2026Jan 11, : 1 · Jan 11, 2026Jan 18, : 0 · Jan 18, 2026Jan 25, : 0 · Jan 25, 2026Feb 1, : 0 · Feb 1, 2026Feb 8, : 0 · Feb 8, 2026Feb 15, : 0 · Feb 15, 2026Feb 22, : 0 · Feb 22, 2026Feb 22,Mar 1, : 0 · Mar 1, 2026Mar 8, : 1 · Mar 8, 2026Mar 15, : 0 · Mar 15, 2026Mar 22, : 0 · Mar 22, 2026Mar 29, : 0 · Mar 29, 2026Apr 5, : 0 · Apr 5, 2026Apr 12, : 0 · Apr 12, 2026Apr 19, : 1 · Apr 19, 2026Apr 19,Apr 26, : 3 · Apr 26, 2026May 3, : 0 · May 3, 2026May 10, : 1 · May 10, 2026May 17, : 0 · May 17, 2026May 24, : 1 · May 24, 2026May 31, : 0 · May 31, 2026Jun 7, : 0 · Jun 7, 2026Jun 14, : 0 · Jun 14, 2026Jun 14,Jun 21, : 0 · Jun 21, 2026Jun 28, : 1 · Jun 28, 2026Jul 5, : 2 · Jul 5, 2026Jul 12, : 0 · Jul 12, 2026Jul 19, : 0 · Jul 19, 2026Jul 26, : 1 · Jul 26, 2026Aug 2, : 6 · Aug 2, 2026Aug 9, : 0 · Aug 9, 2026Aug 9,Aug 16, : 0 · Aug 16, 2026Aug 23, : 0 · Aug 23, 2026Aug 30, : 0 · Aug 30, 2026Sep 6, : 0 · Sep 6, 2026Sep 13, : 1 · Sep 13, 2026Sep 20, : 0 · Sep 20, 2026Sep 27, : 0 · Sep 27, 2026Oct 4, : 0 · Oct 4, 2026Oct 4,Oct 11, : 0 · Oct 11, 2026Oct 18, : 0 · Oct 18, 2026Oct 25, : 0 · Oct 25, 2026Oct 25,
Commits per week on the main repository, last 52 weeks (GitHub API, checked October 25, 2026).

The project publishes no numbered releases on GitHub: you install it from the main branch or a package manager.

GPT API Free vs other agent infrastructure

GitHub stars of the best-rated open-source projects in the agent infrastructure family. Stars measure attention, not quality: a heavily promoted project collects them fast, a specialised tool will have few.

OmniRouteOmniRoute : 80.7K80.7KMem0Mem0 : 67.7K67.7KFirecrawlFirecrawl : 194.9K194.9KClaude-MemClaude-Mem : 102.8K102.8KCogneeCognee : 32.7K32.7K9Router9Router : 31.3K31.3KHyperframesHyperframes : 71.3K71.3KCrawl4AICrawl4AI : 86.2K86.2KGPT API FreeGPT API Free : 44.8K44.8K
Log scale; GPT API Free in orange. Checked October 25, 2026.

GPT API Free and other agent infrastructure at a glance

The 7 best-ranked agents in the same family, 7 of them open source. The score out of 100 only applies to open-source projects; for proprietary services we show the published entry price. A dash marks information the documentation does not state.

Quick comparison: agent infrastructure
AgentModelScoreStars or entry priceSelf-hostableHuman approval
GPT API Freeopen source6544.8K ★no–
OmniRouteopen source9080.7K ★yes–
Mem0open source8967.7K ★yes–
Firecrawlopen source86194.9K ★yes–
Claude-Memopen source86102.8K ★yes–
Cogneeopen source8532.7K ★yes–
9Routeropen source8531.3K ★yes–
Hyperframesopen source8471.3K ★yes–

How we rated it

Score: 65/100, computed only from public, verifiable data, with no subjective testing or partnership:

  • Adoption 32/40: 44,792 stars on a log scale (40 points from about 200,000).
  • Activity 13/30: last commit 2 months ago, 0 releases in six months, 22 commits in a year.
  • Framework 20/30: licence, default human approval, self-hosting, model choice and documentation site.

The score does not say whether the agent will succeed at your tasks: it measures how solid the project is. The full grid is on the method page.

Verdict

GPT API Free is a serious option; check the limitations below before granting it access.

Strengths

  • Widely followed: 44.8K stars
  • Free choice of model
  • Permissive licence (MIT)

Limitations

  • Hosted service only

Avoid if…

  • Your data must not leave your infrastructure

Frequently asked questions

Is GPT API Free free?

The software is free (MIT licence). You still pay for the model calls, unless you use a local model.

Is GPT API Free safe?

Our risk level: low. Points found: data held by the vendor. Give it minimum rights and approve irreversible actions.

Which models does GPT API Free use?

According to its documentation: GPT (OpenAI), Claude (Anthropic), DeepSeek, Gemini (Google), and Grok (xAI).

Can GPT API Free be installed on your own server?

No: it is a service hosted by the vendor.

What are the alternatives to GPT API Free?

In the same family: OmniRoute, Mem0, Firecrawl, and Claude-Mem.

GPT API Free or OmniRoute: what is the difference?

Both belong to the agent infrastructure family. GPT API Free has 44.8K stars against 80.7K for OmniRoute and only OmniRoute can be self-hosted. The right choice mostly depends on the access you are willing to give it.

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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score