Surplus Intelligence alternatives

11 x402 AI inference APIs compared with Surplus Intelligence: the price per call read from each 402, x402 grade, uptime and median response time from our own daily unpaid checks.

Surplus Intelligence for reference

Order book where users buy and sell AI inference credits at a discount.

Our numbers for it are hidden while its check is being updated.

Surplus Intelligence review

Top ranked

Gondola

Grade A (95/100), up

Lowest price per call in its 402

Synap by Linkrra

$0.001

Fastest median response

a2apay.io

246 ms

11 Surplus Intelligence alternatives compared

Ranked by x402 grade, then uptime from our daily checks, then x402 score and response time. Price is shown but never used for ranking; “lower” or “higher” compares with Surplus Intelligence’s per call. Paid placement never changes the order.

#	Listing and why pick it	Status	x402 grade	Uptime (checks so far)	Price in 402	Response (median)
1	Gondola status Higher x402 grade (A) OpenAI- and Anthropic-compatible endpoint for frontier models paid in USDC, without storing prompts.	Up	A (95/100)	100% (14/14)	$0.01	279 ms
2	JarvisClaw status Higher x402 grade (A) AI API gateway with one OpenAI-compatible endpoint for GPT, Claude, Gemini and other models, with smart…	Up	A (95/100)	100% (14/14)	$0.003	284 ms
3	AiSpace status Higher x402 grade (A); also pays on Solana Privacy-focused AI chat, image and video generation built on Venice.ai, pay as you go.	Up	A (95/100)	100% (14/14)	$0.01	287 ms
4	Synap by Linkrra status Higher x402 grade (A) OpenAI-compatible inference API for popular open models. Pay per call in USDC on Base via x402, no account…	Up	A (95/100)	100% (14/14)	$0.001	435 ms
5	a2apay.io status Higher x402 grade (A) Pay-per-request AI agent services in USDC on Base: send a prompt and get an answer, or store persistent…	Up	A (95/100)	100% (13/13)	$0.028	246 ms
6	Losbeto status Higher x402 grade (F); also pays on Solana and Polygon OpenAI-compatible LLM gateway paid per call in USDC, plus market data such as forex, equities, commodities…	Up	F (0/100)	100% (14/14)	$0.005	276 ms
7	MapleAI status Higher x402 grade (A); also pays on Solana and Polygon OpenAI-compatible chat (GPT and Claude models), image generation and editing, and audio behind one endpoint,…	Up	A (95/100)	100% (14/14)	$0.01	526 ms
8	OnHub status Higher x402 grade (A) Pay-per-request API layer for agents, currently text inference paid in USDC on Base.	Up	A (95/100)	100% (14/14)	$0.002	865 ms
9	GEDX402 status Higher x402 grade (A) Cloudflare Workers AI endpoints (chat, search, scraping, social ingest) paid in USDC on Base over x402.	Up	A (90/100)	100% (14/14)	$0.002	581 ms
10	GlianaAI Higher x402 grade (C); also pays on Solana Pay-per-call AI inference across 120+ generative models (image, video, text), plus market data, SEC filings…	Up	C (70/100)	100% (14/14)	$14.62	774 ms
11	BlockRun status Higher x402 grade (A) Pay-per-result access to AI models and tools for agents, with each payment tracked and scored so spend goes…	Up	A (90/100)	92.9% (13/14)	$0.002	368 ms

1. GondolaUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
279 ms
Gondola status
2. JarvisClawUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.003
Response
284 ms
JarvisClaw status
3. AiSpaceUp
Higher x402 grade (A); also pays on Solana
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
287 ms
AiSpace status
4. Synap by LinkrraUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.001
Response
435 ms
Synap by Linkrra status
5. a2apay.ioUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (13/13)
Price in 402
$0.028
Response
246 ms
a2apay.io status
6. LosbetoUp
Higher x402 grade (F); also pays on Solana and Polygon
x402 grade
F (0/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005
Response
276 ms
Losbeto status
7. MapleAIUp
Higher x402 grade (A); also pays on Solana and Polygon
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
526 ms
MapleAI status
8. OnHubUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.002
Response
865 ms
OnHub status
9. GEDX402Up
Higher x402 grade (A)
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.002
Response
581 ms
GEDX402 status
10. GlianaAIUp
Higher x402 grade (C); also pays on Solana
x402 grade
C (70/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$14.62
Response
774 ms
11. BlockRunUp
Higher x402 grade (A)
x402 grade
A (90/100)
Uptime (checks so far)
92.9% (13/14)
Price in 402
$0.002
Response
368 ms
BlockRun status

Prices are what each endpoint’s 402 asked for at our last check, for the one endpoint we check. Each API does its own job and other routes may be priced differently, so a lower price is not like-for-like. Check the provider before paying.

Surplus Intelligence alternatives FAQ

What are the best alternatives to Surplus Intelligence?

By our ranking (x402 grade, then uptime from our daily checks, then x402 score and response time): Gondola, JarvisClaw, AiSpace. Each does its own job, so check that its endpoints cover what you use Surplus Intelligence for.

How are these alternatives ranked?

Same category, ranked by x402 grade, then uptime from our own daily unpaid checks, then x402 score, valid x402 share and median response time. Price is shown but never used for ranking, and paid placement never changes the order.

Surplus Intelligence review·AI inference APIs status·Best AI inference APIs·Uptime leaderboard

Data as of Nov 10, 2026, 7:20 AM ET. One unpaid request per listing per day to its example endpoint; up means any answer below HTTP 500 except 404/410 within 8 seconds. The x402 grade comes from x402fix, our free unpaid check of each 402 payment request; it rates the payment request, not uptime, and is not an endorsement. Listings with no check yet, no price read from a 402, or a check we are fixing are left out.

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