Free GPT-6 Astra via the Tokenator API
What the model is for
This model is available on the free tier with predefined usage limits. GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon agentic tasks that involve computer and browser use.
Specification
| Full name | Free GPT-6 Astra |
| API ID | free-gpt-6-astra |
| Model vendor | OpenAI |
| Type | Text model (chat / completions) |
| Context window | 1M tokens |
| Max output | 128K tokens |
| Image input | yes |
| Tokenator usage multiplier | does not draw down the key limit2.5M tokens per day40 requests per dayresets at 00:00 UTC |
| Input modalities | text, image, file |
| Aliases | cursor-free-gpt-6-astra |
| Supported API formats | /v1/chat/completions /v1/responses /v1/messages |
| Upstream providers | 1 |
| Current status | available |
| Data updated | 2026-09-04 |
Upstream providers
| Provider | Multiplier |
|---|---|
| LimitedAI | 6× |
A request goes to the first available provider by priority; if it fails, Tokenator switches to the next one.
Example request
curl https://api.tokenator.top/v1/chat/completions \ -H "Authorization: Bearer sk-your-tokenator-key" \ -H "Content-Type: application/json" \ -d '{ "model": "free-gpt-6-astra", "messages": [{"role": "user", "content": "Hello"}] }'
Compatible tools
The model can be used in any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code, Cherry Studio, OpenClaw.
See also
FAQ about Free GPT-6 Astra
What is the API ID of Free GPT-6 Astra?
free-gpt-6-astra — put this into the model field of your request.
What context window does Free GPT-6 Astra have?
1M tokens; max output is 128K tokens.
How many tokens will a request cost?
(input + output) × 6×. See the documentation for details.
Which tools support this model?
Any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code. Setup guides are in the integrations section.
Is Free GPT-6 Astra really free?
Yes. Requests to this model do not draw down your key's token limit — no multiplier is applied and your paid bundle stays untouched. A daily allowance applies instead: 2.5M tokens and 40 requests per day.
What is the limit on the free model and when does it reset?
The allowance — 2.5M tokens and 40 requests per day — is counted per key and per model, and resets at 00:00 UTC. Spending one free model's limit leaves the other free models usable.
What happens when the daily limit runs out?
The request returns 429 with the code free_model_daily_limit and a message stating what was spent and when it resets. Your paid key limit is left alone — there is no automatic switch to paid billing. The remaining allowance per free model is returned by /v1/tokens.
Do free models need a separate key?
No. The same key and the same base URL as for paid models — only the model field changes. The full list of free models is on its own page, and the mechanics are in the documentation.