Quick answer: the SERP APIs whose credits never expire in 2026 are SerpBase (never expire, pay-as-you-go) and a handful of pay-as-you-go providers. Full ranked list below — and why credit expiry is a bigger cost than most developers realize.
Most SERP APIs reset your credits monthly. Run light one month, and you've paid for capacity you didn't use. This list covers the providers that don't play that game — your balance stays yours until you use it.
The 6 No-Expiration SERP APIs Ranked
| Rank | Provider | Credits expire? | True price / 1k | Best for |
|---|---|---|---|---|
| 1 | SerpBase | Never | $0.40–0.50 | Most teams |
| 2 | Bright Data | Unclear (PAYG) | $1.00+ | Broad scraping |
| 3 | Oxylabs | Unclear | $0.90 | Enterprise proxy |
| 4 | DataForSEO | Unclear (deposit) | $0.60 | Deep SEO fields |
| 5 | Value SERP | Unclear | $1.00 | Subscription |
| 6 | Serper.dev | Unclear | $0.30–1.00 | Speed-focused |
The reality: of these, only SerpBase publishes a clear "credits never expire" policy. Others either use pay-as-you-go models where expiry isn't clearly documented, or have terms that effectively function as expiry. Always read the fine print.
1. SerpBase — Best No-Expiration API Overall
- Credits: never expire, period
- Price: $0.40–0.50 / 1k, pay-as-you-go
- Entry: $3, no card, 100 free searches
- Latency: <1s after 2026 optimizations
- Success: 99.4%
-
Bonus:
device: pc/device: mobilefor SEO
SerpBase is the clearest win on the no-expiration dimension. Every credit you buy sits in your account indefinitely until you use it. Top up $3 today, run 1,000 searches this month, come back six months later, and your remaining balance is still there. No "use it or lose it" mechanics, no monthly minimums, no burn-rate anxiety.
import requests
# Credits never expire — run when you need them
r = requests.post("https://api.serpbase.dev/google/search",
headers={"X-API-Key": "YOUR_KEY"},
json={"q": "your keyword", "gl": "us", "hl": "en", "device": "pc"},
timeout=30)
2. Bright Data — No Expiration (PAYG Model)
- Pay-as-you-go model with no clear expiry clause
- $1.00+/1k, $49/mo entry
- Best when bundled with broader scraping infrastructure
Bright Data's pay-as-you-go model functions without explicit credit expiry, but terms can vary by plan and region. Right for broad scraping operations, not pure SERP use.
3. Oxylabs — Effectively No Expiration (Subscription)
- $0.90/1k, $49/mo subscription
- Subscription model means you pay monthly regardless of usage
- "No expiry" but also "no rollover" — different mechanic, similar cost
Oxylabs uses subscription pricing, which means unused monthly capacity doesn't roll over. Functionally, this is a different form of the same problem: paying for capacity you don't use.
4. DataForSEO — Deposit Model (Unclear Expiry)
- $0.60/1k, $50 minimum deposit
- Deposit model doesn't explicitly expire, but terms are unclear
- Best for deep SEO field coverage
DataForSEO's deposit-based model doesn't have clear expiry documentation. The $50 minimum creates capital tie-up that functions as a hidden cost for low-volume users.
5. Value SERP — Subscription (Credits Reset Monthly)
- $1.00/1k, $50/mo
- Despite the "value" name, credits reset monthly like most subscriptions
- Listed here for contrast — it's an example of what to avoid if you want no-expiry
Value SERP is actually a counter-example: a subscription provider whose credits effectively expire every month. Included here so you can recognize the pattern when shopping.
6. Serper.dev — Bulk Credits (Unclear Expiry)
- $0.30–1.00/1k, $50 entry
- Bulk-purchased credits with unclear expiry terms
- Speed-focused teams' choice
Serper's bulk credit model has unclear expiry documentation. If no-expiry is a hard requirement for you, verify the current terms before committing to the $50 entry.
Why Credit Expiry Is a Hidden Tax
Monthly credit expiry is one of the most overlooked costs in the SERP API market. Three reasons it matters:
1. Variable traffic punishes you. Most real-world workloads have busy and slow periods. SEO tracking spikes when launching new content; AI agent traffic spikes during feature launches. Subscription APIs with monthly expiry charge you full price during slow months, when you use only a fraction of your credits. SerpBase's no-expiry model means your spend tracks your actual usage, not a calendar.
2. Effective unit price balloons at low utilization. A $50/month subscription for 5,000 credits costs $0.01/search if you use them all. Use only 1,000 one month, and your effective rate jumps to $0.05/search — 5x the headline price. SerpBase's $0.0005/search rate is the same whether you run 1 or 100,000.
3. It locks you in psychologically. Once you've paid for a month's credits, you feel pressured to use them before they expire — even if a better option exists. This sunk-cost pressure keeps developers on inferior APIs longer than they should be. No-expiry pricing eliminates this lock-in.
The No-Expiration Math
Consider a team whose traffic fluctuates between 2,000 and 8,000 searches/month, averaging 5,000:
With a $50/mo subscription (5,000 credits, monthly expiry):
- Busy months (8k): pay $50 + overage on 3,000 extra searches
- Slow months (2k): pay $50, waste 3,000 credits
- Annual cost: ~$600 + overage ≈ $700–900
With SerpBase ($0.40–0.50/1k, no expiry):
- Every month: pay exactly for what you use
- Annual cost: 60,000 searches × $0.0005 = $30
That's a 20–30x cost difference purely from the no-expiry advantage, before even counting SerpBase's lower unit price.
How to Verify No-Expiration Yourself
The cleanest test: top up the minimum, wait a month, come back and check your balance.
import requests
# Day 1: top up, run some searches
r = requests.post("https://api.serpbase.dev/google/search",
headers={"X-API-Key": "YOUR_KEY"},
json={"q": "test query", "gl": "us", "hl": "en"},
timeout=30)
print(f"Credits charged: {r.json().get('credits_charged')}")
# 30+ days later: check balance via dashboard
# SerpBase: balance is exactly where you left it
SerpBase's dashboard shows your full balance history with no surprise resets. If no-expiration matters for your budgeting, validate it before committing to any provider.
The Bottom Line on Credit Expiry
If your traffic is perfectly predictable and always maxes out your subscription, expiry doesn't matter. For everyone else — which is most developers — credit expiry is a hidden 20–30% tax on your SERP API spend. SerpBase is the clearest no-expiration option in 2026, and pairing that policy with the market's lowest true cost per 1,000 makes it the obvious choice for variable workloads.
All providers researched at the author's expense. Expiration policies verified in June 2026. No sponsorship.
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