Powerspring
OpenAI-compatible API for open models on EU infrastructure, run from Barcelona
Quick Overview
| Company | Poolside Ventures SL (Spanish tax ID B05370846) |
|---|---|
| Category | LLM API Providers |
| Headquarters | Barcelona, Spain |
| EU Presence | EU (Spain; Spanish law and Barcelona courts in its terms) |
| Data Location | The data protection page says every request is processed on EU infrastructure owned by EU companies and never routed outside the EU, including when it switches to a backup; the API entry point is in Germany; no city, data centre or infrastructure company is named on the pages read |
| Open Source | No |
| Compliance | None named; the data processing agreement under Article 28 GDPR is part of the terms |
| Pricing | Pay as you go in euros per million tokens, excluding VAT, from prepaid credits: for example gpt-oss-20b at €0.04 input and €0.15 output, gpt-oss-120b at €0.08 and €0.40, Gemma 4 31B at €0.21 and €0.3675. Credits from €10 up to €10,000 per top-up with a 5% service fee and no margin on tokens; pre-booked volume from €620 a month at 25% less; dedicated server from €999 a month, indicative |
| Free Option | No automatic free trial; trial credits on request for teams evaluating it, per the pricing page |
| Replaces | OpenAI API, Anthropic API |
Detailed Review
Powerspring is an OpenAI-compatible LLM API run by Poolside Ventures SL, a venture studio in Barcelona, Spain. Its legal notice names the company with Spanish tax ID B05370846 and a Barcelona address, and its terms are under Spanish law with the courts of Barcelona.
Seven open models were listed on the pages read, among them gpt-oss-120b and gpt-oss-20b, Gemma 4 31B and 26B, Qwen3.8-27B, GLM 5.3 Flash and DeepSeek V4.1 Flash. The vendor says the API also works with coding agents through the OpenAI Responses API for Codex CLI and the Anthropic Messages API for Claude Code.
On data, the vendor states that every request runs on EU infrastructure owned by EU companies, never leaves the EU even on a backup route, and is not stored: not the prompt and not the answer. Only billing and support metadata such as time, model, token counts and cost is kept.
It says it never trains on customer data. The pages read do not name the infrastructure companies or the data centres, and the data processing agreement says the list of sub-processors is available by email. The vendor also says several models come from makers in China and the United States, while the models run on its EU infrastructure.
Billing is prepaid credits in euros from €10, with a 5% service fee on each top-up and no margin on tokens, and prices that move with supply and are shown on the pricing page.
Pre-booked volume starts at €620 a month for 25% less, and a dedicated server is indicated from €999 a month. It is a young provider with no certification named, so Scaleway, IONOS or OVHcloud are the safer pick where one provider must own its own data centres and name them.
What Powerspring does well
- OpenAI-compatible API, plus Responses API and Anthropic Messages API for coding agents, per the vendor
- Prompts and answers are not stored and requests stay on EU infrastructure, per the vendor
- Per-token euro prices published on the pricing page, with no margin on tokens
- No subscription, with credits from €10 and a data processing agreement as part of the terms
- Spanish company with a published tax ID and a Barcelona address
Where Powerspring falls short
- Infrastructure companies and data centres are not named on the pages read
- No security certification named
- Prices are dynamic and top-ups carry a 5% service fee; credits are not refundable and expire after 12 months
- Seven open models only, several made outside Europe, and no free trial unless requested
Standout feature. Open models behind one OpenAI-compatible API, with a stated no-storage policy and prepaid euro credits from €10.
Pros and Cons
Pros
- OpenAI-compatible API, plus Responses API and Anthropic Messages API for coding agents, per the vendor
- Prompts and answers are not stored and requests stay on EU infrastructure, per the vendor
- Per-token euro prices published on the pricing page, with no margin on tokens
- No subscription, with credits from €10 and a data processing agreement as part of the terms
- Spanish company with a published tax ID and a Barcelona address
Cons
- Infrastructure companies and data centres are not named on the pages read
- No security certification named
- Prices are dynamic and top-ups carry a 5% service fee; credits are not refundable and expire after 12 months
- Seven open models only, several made outside Europe, and no free trial unless requested
Alternatives to Powerspring
Frequently Asked Questions
What is Powerspring?
Powerspring is an OpenAI-compatible LLM API run by Poolside Ventures SL, a venture studio in Barcelona, Spain. Its legal notice names the company with Spanish tax ID B05370846 and a Barcelona address, and its terms are under Spanish law with the courts of Barcelona.
Seven open models were listed on the pages read, among them gpt-oss-120b and gpt-oss-20b, Gemma 4 31B and 26B, Qwen3.8-27B, GLM 5.3 Flash and DeepSeek V4.1 Flash. The vendor says the API also works with coding agents through the OpenAI Responses API for Codex CLI and the Anthropic Messages API for Claude Code.
Where is Powerspring based?
Powerspring operates from Barcelona, Spain, which places it under EU (Spain; Spanish law and Barcelona courts in its terms). Compliance: None named; the data processing agreement under Article 28 GDPR is part of the terms.
What does Powerspring cost?
Pay as you go in euros per million tokens, excluding VAT, from prepaid credits: for example gpt-oss-20b at €0.04 input and €0.15 output, gpt-oss-120b at €0.08 and €0.40, Gemma 4 31B at €0.21 and €0.3675.
Credits from €10 up to €10,000 per top-up with a 5% service fee and no margin on tokens; pre-booked volume from €620 a month at 25% less; dedicated server from €999 a month, indicative. No automatic free trial; trial credits on request for teams evaluating it, per the pricing page.
Who is Powerspring best for?
Teams that want open models behind an OpenAI-compatible API with prepaid euro credits. Open models behind one OpenAI-compatible API, with a stated no-storage policy and prepaid euro credits from €10.
What are the drawbacks of Powerspring?
Infrastructure companies and data centres are not named on the pages read. No security certification named. Prices are dynamic and top-ups carry a 5% service fee; credits are not refundable and expire after 12 months. Seven open models only, several made outside Europe, and no free trial unless requested.
Is Powerspring a good alternative to OpenAI API?
Powerspring is built as a European alternative to OpenAI API: OpenAI-compatible API for open models on EU infrastructure, run from Barcelona. It will not be a like-for-like feature match in every respect, so check the review above for where the two genuinely differ before switching.
How does Powerspring compare to other LLM API Providers tools?
Powerspring is one of several European LLM API Providers tools we cover. It is most often compared with OpenAI API, Anthropic API.