Free Bing SERP API in 2026: The Official One Is Gone

You searched for a free Bing SERP API, so here is the straight version. Microsoft's own free Bing Search API is gone, and nothing Microsoft sells today replaces it for free. What is left is a handful of third-party SERP APIs that hand out a few hundred to a few thousand Bing queries, and some that charge well under a dollar per 1,000 after that.

We read every official pricing page below on 2026-10-23 and did the maths ourselves. We did not run benchmarks or trial any competitor's product, so you will find no speed or success-rate numbers here. Where a page did not print a figure, we say “not verified” instead of guessing.

The options at a glance (read 2026-10-23)

One row per option. “Free” is what you get before paying anything. Rates are per 1,000 requests, taken from each vendor's own pricing page.

What Microsoft retired, and what it sells now

Microsoft's lifecycle notice is blunt. The Bing Search APIs were retired on August 11, 2025. Existing instances were decommissioned, and the product is “no longer available to be used or new customer signup.”

The companion Azure update says the retirement covers the F1 and S1 to S9 resources of Bing Search, and the F0 and S1 to S4 resources of Bing Custom Search. F1 and F0 were the free tiers. They are gone with the rest.

The replacement is not a search API

Microsoft points customers to Grounding with Bing Search, part of its Azure AI agent service. It is a different kind of product. Here is what Microsoft's own documentation says about it:

• You create a Grounding with Bing Search resource and connect it to an AI agent. The agent decides when to search.
• “Developers and end users don't have access to raw content returned from Grounding with Bing Search.” You get the model's answer, citations and a link to the Bing query.
• Those citations must be shown in the exact form Microsoft provides, under its Use and Display Requirements.
• Only paid and pay-as-you-go Azure subscriptions qualify. Sponsored or free-credit subscriptions are not eligible, so you cannot spend your Azure free credits on it.
• Usage is counted by tool calls per agent run, and the model's own tokens are billed separately on the Foundry Agent Service pricing page.

What it costs

Microsoft's public price feed (the Azure Retail Prices API) lists Grounding with Bing Search at $14.00 per 1,000 transactions, effective 2026-01-01. Custom Search is the same $14.00. The consumer pricing pages rendered blank for us, so this feed is our source. That is about 23 times Serpent's $0.60 Default rate for a web call, for something that cannot hand you a ranked list of URLs.

If you need ranked organic results as data, which is what a SERP API means, Grounding is not it. We cover that gap in more depth in our post on Bing Search API replacements.

What about the Bing Webmaster API?

It exists, and Microsoft documents it, but it is a webmaster-tools interface. It is not a way to pull search results for arbitrary keywords.

The four kinds of “free”

Most “free Bing API” lists mix four different things. They behave very differently once you build on them.

1. A renewing allowance. A set number of requests every month, no card. Bright Data, Decodo and SerpApi work this way. This is the closest thing to a free tier.
2. A one-time credit. Dollars or requests you spend once. DataForSEO's $1 and Oxylabs' $5 are this. Good for a proof of concept, then it is over.
3. A sandbox with dummy data. DataForSEO's sandbox returns the same fields as production, but “every value in them is dummy data.” It tests your parser, not your keywords.
4. Doing it yourself. You can write your own Bing parser. It costs no API fee, but it costs your time. We cover that below and in how to scrape Bing for free.

The near-free options, one by one

Serpent is first among the paid options because, on the numbers below, its entry rate is the lowest synchronous Bing-capable rate we could verify. We are the publisher, so judge the table, not the order. Where a rival beats us, we say so.

1. Serpent API

• Free: A free account gets 10 free calls, shared across all services, with no card. You also get one free demo run a day on the site without signing up. That is small, and Bright Data and Decodo give far more for pure testing.
• Paid: Web search on engine=bing is $0.60 per 1,000 on Default. A single $100 deposit moves new credit to $0.30 (Growth), $500 to $0.10 (Scale) and $1,000 to $0.03 (Enterprise). The engine never changes the rate, so Bing costs the same as Google or Yahoo on the same pricing page.
• Commitment: New accounts need a $10 minimum deposit. There is no monthly subscription, and deposited credits do not expire. Once your lifetime deposits reach $50, later top-ups have a $100 minimum.
• What you get back: Quick Search (/api/search/quick) returns organic rows: position, title, URL, snippet and displayed URL. Deep Search (/api/search) adds People Also Ask with answers, related searches, inline videos, ads and rich snippets. AI Overview is always null on Bing. Country targeting covers 112 countries, per the Bing SERP API page.
• Billing detail: A Quick call is one charge whatever num is (1 to 100, a ceiling, not a promise). Deep Search charges one unit per page requested.
• Watch out: The 10-call free pool runs out in minutes. Default allows 100 requests a minute and 10,000 a day, so very high volume needs a higher tier.

Cheapest? Not a claim we will make. At $0.60, Serpent ties DataForSEO's queued rate and is below every other synchronous rate we read at entry level. Decodo's “from $0.15” headline may be lower, but its page does not print a Bing SERP rate, so we could not compare it.

2. Bright Data SERP API

• Free: The SERP API pricing page lists a free tier of 5,000 requests a month, no credit card required.
• Paid: $1.50 per 1,000 requests pay as you go, charged only for successful results. The Scale plan is $499 a month with 380,000 requests included, then $1.30 per 1,000.
• Bing: Bing is listed among the engines on the SERP API product page. We could not confirm that the free requests apply to Bing specifically, so check in your dashboard.
• Best for: The biggest renewing free allowance we found that clearly includes a Bing-capable product, and a good fit if you outgrow free into enterprise volume.
• Watch out: The paid rate is 2.5 times Serpent's Default rate.

3. Decodo Web Data API

• Free: Decodo's SERP page says the free starter plan includes up to 10,000 monthly requests and needs no credit card. Its pricing table words the same plan as “up to 5K crawls or 10K pages scraped.”
• Paid: Plans run from $19 a month. The page quotes “from $0.15 per 1K requests” for the cheapest request type, but prints no per-SERP Bing price. Not verified.
• Best for: Testing at the largest free volume in this list.
• Watch out: Pricing depends on request complexity, so you cannot work out a Bing cost per 1,000 from the public page.

4. SerpApi

• Free: The pricing page lists a Free plan with 250 searches a month and a guaranteed 50 successful searches an hour.
• Paid: $25 a month for 1,000 searches, $75 for 5,000, $150 for 15,000 and $275 for 30,000. That works out to $25.00, $15.00, $10.00 and $9.17 per 1,000. Larger volumes go through sales.
• Bing: There is a dedicated Bing Search API page.
• Watch out: It is a monthly subscription, and at low volume the per-search price is the highest in this list.

5. SearchApi

• Free: The pricing page offers 100 free requests on sign-up, no card.
• Paid: $40 a month for 10,000 searches ($4 per 1,000), $100 for 35,000 ($3), $250 for 100,000 ($2.50), $500 for 250,000 ($2). The ladder goes to $1 per 1,000 at 5 million. It has a Bing Search API in its docs, and its pricing page prints one ladder with no Bing-specific rate.
• Watch out: The page states you can use only up to 20% of your plan's credits each hour, so a bulk job at the start of the month has to be spread out.

6. DataForSEO Bing Organic SERP API

• Free: A $1 trial credit for new accounts, plus a sandbox that returns correctly shaped but dummy data. DataForSEO's help page says $1 covers about 833 SERPs at high priority.
• Paid: The Bing Organic page prices one SERP of 10 results at $0.60 per 1,000 in the standard queue, $1.20 priority and $2.00 live. Search operators such as site: cost five times the base price. Extra result pages cost extra.
• Commitment: The pricing page shows a $50 minimum top-up and a balance that never expires.
• Watch out: The $0.60 mode is a task queue with a stated turnaround of about 5 minutes on average and a target of 45. If you need an answer inside one request, the live mode is $2.00 per 1,000.

7. Oxylabs and Apify, briefly

Oxylabs lists Bing among its search engines and gives a $5 welcome credit. Its public table has rows for Google, Amazon and “other targets” from $1.00 per 1,000, with no separate Bing row, so we cannot give you a verified Bing rate. On Apify, a community-built Bing actor is listed with a “from $0.50 per 1,000 run start fees” price and a per-result charge we could not read. Apify's free plan includes $5 of monthly usage.

Brave Search is a popular “free Bing alternative,” but it runs its own index, so its results will not match Bing's. We look at it in our free Brave Search API guide. For Yahoo and DuckDuckGo see free Yahoo Search API and free DuckDuckGo API.

What free really costs you

The price tag is only part of it. Four costs hide inside “free.”

Your time

A free allowance forces you to build quota tracking and a plan for the day it runs out. A one-time credit means you rebuild your billing assumptions the week it ends. A hand-built parser means you own every change to Bing's page layout.

Throttles on the free plan

Free plans come with hourly ceilings. SerpApi's free plan guarantees 50 successful searches an hour. SearchApi caps usage at 20% of plan credits per hour. A monthly allowance you can only spend 50 searches an hour is a slow allowance.

Terms and rules

Grounding with Bing Search comes with display requirements and sends your customer data outside the Azure compliance boundary, per Microsoft's own page. For any provider, read the terms you accept. If you plan to collect Bing results yourself, check Bing's terms of use and your own counsel's view first. We are not giving legal advice.

Maintenance and support

A DIY parser breaks silently when a page changes, and the only support is you. For a prototype that is fine. For rank tracking that customers rely on, it is not.

Free is great for proving an idea. It rarely survives contact with a real workload. Which is why the interesting question is not “what is free,” but “how little does it cost to stop thinking about it.”

Cost at 1K, 10K, 100K and 1M calls

This is arithmetic from the published rates above, for one Bing web search per call, per month. We ignored free allowances, tax, and extras like search operators. Where a vendor sells fixed monthly plans, we used the cheapest plan that covers the volume.

How to read it

• The Serpent tier rows assume you made the single qualifying deposit for that tier. A $1,000 deposit at the Enterprise rate buys more than 33 million Quick Web calls ($1,000 / $0.00003). Credits do not expire, so you are not forced to burn them in a month.
• The Bright Data Scale figure for 1,000,000 calls is $499 plus 620,000 extra requests at $1.30 per 1,000.
• Subscription plans (SearchApi, SerpApi) cost the same whether you use all of the quota or not. That is why they look expensive at 1,000 calls.
• The Microsoft row covers the Grounding tool-call charge only. Model tokens are extra, and the output is a model answer, not a result list.
• Units differ. DataForSEO bills a 10-result SERP. A Serpent Quick call is one charge whatever num is, while a Serpent Deep call is one unit per page requested.
• For perspective, 5,000 free requests a month (Bright Data) is worth $3.00 at Serpent's Default rate, and Decodo's 10,000 is worth $6.00. A $10 first deposit buys about 16,600 Quick calls.

Volume also meets rate limits. 1,000,000 calls a month is about 33,000 a day, above Default's 10,000 a day. Growth allows 50,000 a day, Scale 100,000 and Enterprise 300,000.

How to choose

• You want to try Bing data this afternoon, for free. Take Bright Data's 5,000 or Decodo's 10,000 monthly allowance, and check Bing works on your account. Our 10 free calls cover a quick look.
• You need a parser test with no spend. Use DataForSEO's sandbox. Remember the values are fake.
• You need Bing results in a product and want the lowest unit price. Serpent at $0.60 Default, or DataForSEO's queue if you can tolerate minutes of delay and a $50 first top-up.
• You need the lowest unit price at volume. Compare the Serpent tiers above. The $0.03 Enterprise rate needs a $1,000 deposit, so work out whether your usage justifies it.
• You want a predictable monthly invoice. SerpApi or SearchApi. Pay for the quota whether you use it or not.
• You want an AI agent to answer questions from the web. Grounding with Bing Search is the one product built for that. Budget $14 per 1,000 plus model tokens.
• You track ranks. Read our Bing migration acceptance checklist and the free rank tracking API guide before you commit.

Quick start and migration

Switching to Serpent is a query parameter. This is the Quick Search call from the API docs:

curl "https://apiserpent.com/api/search/quick?q=best+crm+software&engine=bing&country=us&num=10" \
  -H "X-API-Key: YOUR_API_KEY"

And the same call in Python:

import os
import requests

resp = requests.get(
    "https://apiserpent.com/api/search/quick",
    params={"q": "best crm software", "engine": "bing", "num": 10, "country": "us"},
    headers={"X-API-Key": os.environ["SERPENT_API_KEY"]},
    timeout=60,
)
data = resp.json()
if not data.get("success"):
    raise SystemExit(data.get("message"))

for row in data["results"]["organic"]:
    print(row["position"], row["title"], row["url"])

Run it once in the playground first if you would rather see the JSON before writing code. For People Also Ask, related searches and inline videos, call /api/search (Deep Search) instead. The Bing Search API Python tutorial walks through both.

Mapping from the retired Microsoft response

Microsoft's archived v7 reference put web results under webPages, each with a name, url, displayUrl and snippet. The Serpent equivalents:

Position comes with each row as position. Treat any block you rely on as optional and check the metadata.has* flags before reading it.

Limits and unknowns

• We did not test competitors. Every competitor figure is from its published page on 2026-10-23. Prices and allowances change, so treat the numbers as dated.
• Free tiers and Bing. We could not confirm that Bright Data's or Decodo's free requests cover Bing in every account. Check before you build on them.
• Decodo and Oxylabs. Neither prints a per-Bing-SERP rate on its public pages, so they are absent from the cost table.
• Microsoft's own pages. Its Grounding pricing and legal pages blocked our automated reader. The $14 figure comes from Microsoft's Azure price feed, which is also where we saw the 2026-01-01 start date.
• Serpent is an interested party. We wrote this post. The arithmetic is simple enough to redo against the linked pages.
• Bing results can differ by country and day. Whatever API you pick, test your own keywords and markets before you decide.

FAQ

Is there a free Bing search API?

Not from Microsoft. The Bing Search APIs, including their free tiers, were retired on August 11, 2025. Free Bing access today means a third-party SERP API's free allowance, such as 5,000 requests a month at Bright Data, 10,000 at Decodo or 250 at SerpApi, or a one-time trial credit.

What replaced the Bing Search API?

Microsoft points to Grounding with Bing Search in its Azure AI agent service. It feeds web data to an AI model and returns the model's answer with citations. It does not return raw search results, so it is not a drop-in replacement for a Bing SERP API.

How much does Grounding with Bing Search cost?

Microsoft's price feed lists $14.00 per 1,000 transactions for both Search and Custom Search, effective 2026-01-01. Model tokens are billed separately, and free-credit Azure subscriptions are not eligible.

Which SERP API has the biggest free allowance for Bing?

Among the pages we read, Decodo lists up to 10,000 free requests a month and Bright Data 5,000, both with no card. SerpApi offers 250 searches and SearchApi 100 on sign-up. Confirm that the free requests work on Bing in your own account.

Can I get Bing results for free by writing my own parser?

You can, and we explain how in our guide to scraping Bing. It is free in cash and expensive in time, because you maintain the parser yourself. Check Bing's terms of use and your own counsel before collecting results at scale.

What is the cheapest way to get Bing results at volume?

On the published rates we read, Serpent charges $0.60 per 1,000 on Default, falling to $0.03 on Enterprise after a $1,000 deposit. DataForSEO's queued mode is also $0.60 but takes about 5 minutes on average. Decodo's “from $0.15” headline could not be verified for Bing.

Sources (all read 2026-10-23)

• Microsoft: Bing Search APIs retiring on August 11, 2025
• Azure Updates: Retirement of Bing Search APIs
• Microsoft Learn: Grounding with Bing Search
• Microsoft Learn: Azure Retail Prices API
• The Register: Microsoft set to pull the plug on Bing Search APIs
• DataForSEO: Bing Organic SERP API pricing
• SerpApi: pricing
• SearchApi: pricing
• Bright Data: SERP API pricing
• Decodo: SERP scraper API
• Oxylabs: SERP scraper API pricing
• Apify: Bing SERP actor

Related reading on Serpent: free Google SERP API guide, SERP APIs with a free tier and low minimums, SERP API overview.