Is Opper API down?
Current status, daily uptime history and troubleshooting for the Opper API (Machine Learning).
No, Opper is up
Opper answered our last daily check (Nov 15, 2026, 13:58 UTC) in 1242 ms with HTTP 200.
Checking Opper now…
Sending a request from our server.
Opper API uptime history
- Uptime
- 100% of 8 checks
- Last check
- Nov 15, 2026, 13:58 UTC
- Response
- 1242 ms · HTTP 200
- Last up
- Now
We check Opper's listed URL (https://docs.opper.ai/build/gateway/drop-in-sdks) once a day. History started when Opper was first checked, so new entries show fewer than 30 days.
Opper API not working for you?
- Opper needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string.
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Machine Learning APIs up at their last check
- 1
TensorFeed API
Online · 397 msReal-time AI news, model pricing, service status, and agent activity feeds.
- No API key needed
- 100% uptime (30 days)
- Fast: 397 ms response
- Callable from the browser (CORS)
No authHTTPSCORS - 2
AI Economics Tools API
Online · 1036 msToken cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek.
- No API key needed
- 100% uptime (30 days)
- Returns JSON at its URL
- Callable from the browser (CORS)
No authHTTPSCORS - 3
Nonobench API
Online · 679 msOpen-source benchmark of how well LLMs solve nonogram puzzles.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
Modelfax API
Online · 617 msLLM pricing, context windows and deprecation dates, schema-validated and updated daily.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Statlyte API
Online · 503 msLive pricing, context windows and model ids for major LLM APIs.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
Opper API status FAQ
Is Opper API down right now?
Opper answered our last daily check (Nov 15, 2026, 13:58 UTC) in 1242 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether Opper is responding at this moment.
How do you check whether Opper API is up?
Once a day our checker requests Opper's listed URL (https://docs.opper.ai/build/gateway/drop-in-sdks) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
How reliable is Opper API?
Opper answered 100% of our last 8 daily checks. Above 99% is excellent for a free API; below 95% means you should cache responses and keep a fallback ready.
What can I use if Opper API is down?
Free Machine Learning APIs that were up at their last check include TensorFeed, AI Economics Tools, Nonobench. See the full list of Opper alternatives for a comparison.
Why does Opper API work for others but not for me?
Opper needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If it works from one network but not another, check firewalls, VPNs and regional blocks.