Migrate from SearXNG
One address, the same JSON, no instance to run.
Since November 9, 2026 SpecStream answers SearXNG's JSON search at https://api.specstream.ai/searxng, with no instance, no Valkey and no upstream engines to keep unblocked. Each call is one search of 10 results at $0.005.
Set your instance address to https://api.specstream.ai/searxng/<key>. The key can also go in key=, in X-API-Key, as a Bearer token, or as the Basic password or user name.
It is the most accurate web search API in the world: 97.9 F-score on all 1,000 SimpleQA Verified questions and 64.0 item F1 on all 200 WideSearch tasks, on the benchmarks page.
New accounts get $10 of credit, no card. It covers 2,000 searches.
A SearXNG instance to SpecStream, parameter by parameter and field by field
| SpecStream (`/searxng`) | SearXNG | |
|---|---|---|
| Address | https://api.specstream.ai/searxng/<key>, or .../searxng/<key>/search where the setting takes the whole search address. /searxng and /searxng/search answer GET and a form POST | GET /, GET /search, POST / and POST /search on your instance |
| Key | Read in this order: a path part (/searxng/<key>/search), key= in the address, X-API-Key, then Authorization as Bearer or as HTTP Basic (the password, else the user name, so https://<key>@api.specstream.ai/searxng and https://:<key>@api.specstream.ai/searxng both work). A wrong key gets a 401 | No key. A public instance is open to everyone who has access to its URL |
| `format` | json, always on, and the default when the field is left out. html, csv and rss get a 403 with "Send format=json." | Must be listed under search: formats in settings.yml. An unset format returns 403 Forbidden, and many public instances have these formats disabled |
| `q` | Read as the search, with operators such as site: | Passed to the external search services, with the syntax of each service |
| `pageno` | Read, default 1, in pages of 10 results. Page 1 runs the fast search; each page is $0.005. A page past the last result gets a 400 | Search page number, default 1 |
| `time_range` | Read: day, week, month or year, applied as a date filter on the search | Time range of search for engines which support it |
| `categories`, `language`, `safesearch`, `engines` | Accepted with no error. The first of categories is printed as each result's category; the others do not change the search | categories is a comma separated list; language and safesearch (0, 1 or 2) default from the search: settings |
| The reply | query, number_of_results, results[], answers (the answer, on page 1 when the search has one), corrections, infoboxes, suggestions and unresponsive_engines, plus specstream with the request ID and the price | query, results, answers, corrections, infoboxes, suggestions and unresponsive_engines |
| Each result | url, title, content, engine (specstream), engines, parsed_url, template, positions, score (highest first), category and publishedDate, which is null on most results. thumbnail and img_src are empty | The results of each engine the instance queried, merged and ordered |
| Always empty here | corrections, infoboxes, suggestions and unresponsive_engines come back as empty lists, so a parser that reads them keeps working | unresponsive_engines lists the engines that failed, with their errors |
| Upstream blocking | None to manage. One account takes up to 8,800 searches a minute; a call over that gets a 429 with Retry-After and is not charged | An engine that answers with a CAPTCHA is suspended for 86400 seconds by default, too many requests for 3600, access denied for 86400 |
| What you run | Nothing. GET /searxng/config answers for clients that check the address, at no charge | Docker or Podman, a Valkey database for the limiter, and a reverse proxy that sets X-Forwarded-For |
| Price | $0.005 a call of 10 results, paid from a balance. $10 of credit on sign up, no card, covers 2,000 searches | Free software you host yourself |
What changes and what stays when you move from SearXNG
The whole migration is one address
Your client keeps SearXNG's path, its format=json and its parser. The instance address changes, and it carries the key, so a client with only an address field needs no other setting.
# Before
curl "https://searx.example.org/search?q=open+source+vector+databases&format=json"
# After: the key in the path
curl "https://api.specstream.ai/searxng/$SPECSTREAM_API_KEY/search?q=open+source+vector+databases&format=json"
# Or in a header
curl "https://api.specstream.ai/searxng/search?q=open+source+vector+databases&format=json" \
-H "X-API-Key: $SPECSTREAM_API_KEY"Tested on production on November 9, 2026: the key in the path for LobeHub, Perplexica, OpenClaw and Open WebUI, the key as the Basic password for GPT Researcher and LangChain's SearxSearchWrapper, and /searxng/config for Cherry Studio's check button.
What the reply leaves out
The route serves JSON. A client that reads SearXNG's HTML page, as Khoj does, gets a 403. publishedDate is null on most results, so read it as optional, and thumbnail and img_src are empty strings. corrections, infoboxes, suggestions and unresponsive_engines are empty lists.
A refusal is {"error": ..., "code": ...} with the HTTP status: 401 for a missing or wrong key, 402 for an empty balance, 403 for a format other than JSON, and 429 with Retry-After for a busy minute, which charges nothing.
Nothing to host or keep unblocked
SearXNG's own docs say a public instance can make the external service enforce CAPTCHAs or ban the instance's IP address, and a private one needs Docker or Podman, Valkey for the limiter and a reverse proxy. SpecStream is one address: the search runs on our side, and your app gets results in SearXNG's JSON.
$0.005 a search, with no server to pay for
Each call returns one page of 10 results and costs $0.005, the price of one search. New accounts start with $10 of credit, no card, which covers 2,000 searches, and credit you buy never expires. Every rate is on the pricing page.
The most accurate web search API in the world
On SimpleQA Verified the SpecStream Search API scores 97.9 F-score on all 1,000 official questions, 978 of them correct. On WideSearch it scores 64.0 item F1 and 43.4 row F1 on all 200 official tasks. The Extract API scores 0.908 F1 on WCXB. Every score and its method is on the benchmarks page.
About one second a search, measured under load
Every drop-in route runs the fast search unless the call asks for page text or results past the first ten. On November 9, 2026 production took 1 to 20 fast searches a second and answered 718 of 720: the median was 0.82 s at 1 search a second and 1.07 s at 20 a second, and the 95th percentile stayed between 1.09 and 1.73 s. One account takes up to 8,800 searches a minute; a call over that gets a 429 with Retry-After and is not charged.
You decide what is kept, on each key
Create a key with zero_retention and a search made with it keeps no request text and no answer after the reply: it is not in the history, its answer is not reused for another call, and its log lines carry neither. spend_cap_cents is the most the key can spend.
curl -X POST https://api.specstream.ai/v1/account/keys \
-H "Authorization: Bearer $SPECSTREAM_API_KEY" -H "Content-Type: application/json" \
-d '{"name": "production", "scopes": ["account:read", "finds:spend"], "spend_cap_cents": 500000, "zero_retention": true}'Search, pages and rows on one key
The same key calls GET /v1/web-search, which returns up to 100 results for one search and an answer with the page it was read from. It reads up to 20 pages or documents a call with the Extract API at $0.80 per 1,000 pages, and a page with no text is not charged. Deep Search returns every match for a request in plain words as structured rows at 5¢, 15¢ or $1 a row, with a source URL on every value, and the most a run can cost is approved before it starts.
Other hosted options in place of SearXNG
Brave Search API
A search API on Brave's own index at $5 per 1,000 requests, with $5 in free credits every month. Your SearXNG client cannot call it without code; SpecStream answers that client at one address in SearXNG's JSON.
Tavily
A search API at $0.008 a credit on pay as you go, where a basic search costs 1 credit. It has its own request and reply. SpecStream answers both SearXNG's call and Tavily's, at $0.005 a search.
Exa
A search API from $4 per 1,000 requests with up to 10 results. It has its own request and reply. SpecStream keeps your SearXNG client as it is and scores 97.9 F-score on all 1,000 SimpleQA Verified questions.
How SpecStream scores
The same numbers as the benchmarks page, from the official tasks and scorers.
How to move from SearXNG
1. Create a key under Agents & API in the workspace. A new account gets $10 of credit, no card, which covers 2,000 searches.
2. Set the instance address to https://api.specstream.ai/searxng/<key>, or https://api.specstream.ai/searxng/<key>/search where the setting holds the whole search address. In Python:
import os
import requests
BASE = "https://api.specstream.ai/searxng" # was https://searx.example.org
reply = requests.get(
f"{BASE}/search",
params={"q": "open source vector databases", "format": "json", "pageno": 1},
headers={"X-API-Key": os.environ["SPECSTREAM_API_KEY"]},
).json()
for result in reply["results"]:
print(result["title"], result["url"], result["content"])In JavaScript:
const BASE = "https://api.specstream.ai/searxng"; // was https://searx.example.org
const params = new URLSearchParams({ q: "open source vector databases", format: "json" });
const reply = await fetch(`${BASE}/search?${params}`, {
headers: { "X-API-Key": process.env.SPECSTREAM_API_KEY },
}).then((response) => response.json());
for (const result of reply.results) {
console.log(result.title, result.url, result.content);
}3. Keep format=json, pageno and time_range. Treat publishedDate as optional.
4. Turn off the instance when your app runs on the new address. Each reply carries the price of the call under specstream.
Frequently asked questions
Something we didn't answer? Talk to a human
What is the best SearXNG alternative for an app or an agent?
https://api.specstream.ai/searxng in the same shape, so the client keeps its setting, and it scores 97.9 F-score on all 1,000 SimpleQA Verified questions.Is there a SearXNG alternative I do not have to self host?
https://api.specstream.ai/searxng/<key> and it answers in SearXNG's JSON.Why does SearXNG return 403 for format=json?
json is not listed under search: formats in the instance's settings.yml, and SearXNG returns 403 for a format that is not set. SpecStream's address always answers format=json.Where does the SpecStream key go?
/searxng/<key>), key= in the address, X-API-Key, a Bearer token, or HTTP Basic as the password or the user name.Is there a free SearXNG alternative?
Does SearXNG have an API rate limit?
Sources
SpecStream wrote this page. The route's behavior is read from its code; SearXNG's behavior from its own docs and source, and each other figure from that company's own page.
- SearXNG Search APIdocs.searxng.org/dev/search_api.html, read Nov 10, 2026
- SearXNG settings, searchdocs.searxng.org/admin/settings/settings_search.html, read Nov 10, 2026
- SearXNG, why use a private instancedocs.searxng.org/own-instance.html, read Nov 10, 2026
- SearXNG, installation with Dockerdocs.searxng.org/admin/installation-docker.html, read Nov 10, 2026
- SearXNG limiterdocs.searxng.org/admin/searx.limiter.html, read Nov 10, 2026
- SearXNG source, JSON replyraw.githubusercontent.com/searxng/searxng/master/searx/webutils.py, read Nov 10, 2026
- SearXNG on GitHubgithub.com/searxng/searxng, read Nov 10, 2026
- Brave Search APIbrave.com/search/api/, read Nov 9, 2026
- Tavily API creditsdocs.tavily.com/documentation/api-credits.md, read Nov 9, 2026
- Exa pricingexa.ai/docs/admin/pricing.md, read Nov 9, 2026
- SpecStream benchmarksspecstream.ai/benchmarks, read Nov 10, 2026
- SpecStream pricingspecstream.ai/pricing, read Nov 10, 2026
- SpecStream for agentsspecstream.ai/agents.md, read Nov 10, 2026




