# how to get free api for claude-opus-5.5 ?

**URL:** <https://onehack.st/t/how-to-get-free-api-for-claude-opus-5-5/326006>\
**Category:** Discussion & Solutions\
**Tags:** solved\
**Created:** [27.Сентябрь.2026 20:07:06 UTC](https://onehack.st/t/how-to-get-free-api-for-claude-opus-5-5/326006 "2026-09-27T20:07:06Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![SRZ](https://onehack.st/user_avatar/onehack.st/srz/32/146132_2.png) [@SRZ](https://onehack.st/u/SRZ)\
**Post date:** [22.Октябрь.2026 01:40:26 UTC](https://onehack.st/t/how-to-get-free-api-for-claude-opus-5-5/326006/7 "2026-10-22T01:40:26Z")

</div>

🙃 **The one door that asks for nothing** — no key, no card, no form:

👉 **[Puter.js](https://developer.puter.com/ai/anthropic/claude-opus-5-5/)** — `anthropic/claude-opus-5-5` straight in a browser page. The caller pays for their own calls, so you can run a public demo and never see a bill.

That is also the answer to @pei49102 above: stop waiting on the AWS form.

**Two clouds that hand you a real key with credit** 💳  
Vertex gives **$300** for 90 days · [Foundry](https://ai.azure.com/catalog/models/claude-opus-5-5) gives **$200** on a new account. Both carry Opus 5.5.

**Check the map before you build** 🗺  
[modelavailability.com](https://modelavailability.com/models/anthropic/claude-opus-5-5) — Opus 5.5 region by region across Bedrock, Foundry and Vertex, updated daily.

**Cheaper shelf for this month** 📚  
[34 providers · 635 endpoints · one key](https://onehack.st/t/free-ai-instead-of-chatgpt-and-claude-34-providers-635-endpoints-one-key/326626) — our own board.

* * *

> **The code — Puter in a page, and the Hermes config Mohamed asked for**
>
> ```js
> import { puter } from '@heyputer/puter.js';
> const r = await puter.ai.chat("explain vector databases like I'm 15", {
> model: "anthropic/claude-opus-5-5"
> });
> 
> ```
> 
> For Hermes, LibreChat, Open WebUI or the OpenAI SDK — Cloudflare speaks the OpenAI wire format, so it is three lines:
> 
> ```auto
> base_url : https://api.cloudflare.com/client/v4/accounts/<ACCOUNT_ID>/ai/v1
> api_key : <CLOUDFLARE_API_TOKEN>
> model : anthropic/claude-opus-5.5
> 
> ```
> 
> [Cloudflare’s model page](https://developers.cloudflare.com/ai/models/anthropic/claude-opus-5.5/) — 10,000 neurons a day, 1M-token context. Bedrock has an OpenAI-compatible endpoint too.

> **If you want the key from Vertex or Foundry — the exact steps**
>
> **Vertex:** [Opus 5.5 docs](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/partner-models/claude/opus-5-5) → enable the model in Model Garden → `claude-opus-5-5` → the $300 trial covers it, card required but not charged.
> 
> **Foundry:** [model catalog page](https://ai.azure.com/catalog/models/claude-opus-5-5) → deploy → the $200 new-account credit covers it.
> 
> **Bedrock:** the credits route, not the Activate form that never gets reviewed.

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