Patent Pending: US 19/215,933 & EU EP25176020.3

One API call.
Five frontier models.
Superior answers.

GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, Mistral Large 2, and Llama 3.3 70B collaborate in real-time to produce answers that outperform any single model. No prompt engineering needed.

Start Free Trial → Try Playground

5 free credits to start • No credit card required

Evaluated: 100% non-inferiority across 100 expert questions → See benchmark
Consensus 5 models OpenAI Anthropic Mistral Meta Google
Powering consensus with OpenAI Anthropic Google Mistral AI Meta
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Featured in 450+ publications worldwide

Universal Access

Built for machines and humans

The first consensus API with native payment rails for both autonomous AI agents and human developers. Choose how you pay.

For AI Agents

x402 Protocol

Autonomous agents pay per-request with USDC on Base L2. No account needed. No API key. Just send a transaction and attach the proof.

X-Payment: base64({txHash, from})
Permissionless — no signup
USDC on Base (0.5% fee)
On-chain verification
$0.05 / $0.35 / $4.50 per query
x402.org spec compliant
or
For Developers

API Key + Credits

Register in 30 seconds, buy credits with card or crypto. Prepaid balance, volume discounts, and a real-time dashboard to track everything.

X-API-Key: orch_your_key
5 free credits on signup
Stripe (Visa, Mastercard, SEPA)
USDC via NOWPayments
Volume discounts up to 15%
Real-time usage dashboard

Same API. Same models. Same consensus quality. Different payment rail.

Integration

Three lines of code. Three models. One answer.

Drop-in REST API. Get a consensus answer in seconds.

from llmconsensus import LLMConsensus

client = LLMConsensus(api_key="orch_your_key_here")

response = client.orchestrate(
    prompt="Compare microservices vs monolith for a fintech startup",
    mode="balanced"  # fast | balanced | deep
)

print(response.answer)                    # Consensus answer
print(response.metadata.quality_score)   # 0.91
print(response.metadata.models_used)     # ["gpt-5.4", "claude-sonnet-4.6", "gemini-3-pro"]
curl -X POST https://llmconsensus.io/v1/orchestrate \
  -H "X-API-Key: orch_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Compare microservices vs monolith for a fintech startup",
    "mode": "balanced"
  }'
const response = await fetch("https://llmconsensus.io/v1/orchestrate", {
  method: "POST",
  headers: {
    "X-API-Key": "orch_your_key_here",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    prompt: "Compare microservices vs monolith for a fintech startup",
    mode: "balanced"
  })
});

const data = await response.json();
console.log(data.answer);                    // Consensus answer
console.log(data.metadata.quality_score);     // 0.91

→ Returns a consensus answer with 0.91 quality score in 18 seconds

How it works

From prompt to consensus in 5 steps

01
Submit

Send any prompt via the REST API with your chosen mode

02
Distribute

Multiple frontier models process your prompt simultaneously

03
Evaluate

Models critique and score each other's responses

04
Refine

Iterative improvement through cross-model feedback loops

05
Consensus

Best elements synthesized into a single superior answer

Features

Why use consensus?

Higher Accuracy

Cross-validation between frontier models eliminates hallucinations and errors before they reach you.

Domain Detection

Automatically optimizes for legal, medical, financial, and technical domains for better results.

Real-time Streaming

SSE streaming shows you every model's contribution as it happens in real time.

Batch Processing

Submit up to 20 prompts in one call for parallel processing. Maximize throughput.

Built for Agents

x402 permissionless payments, structured JSON, webhooks, idempotent requests. Agents pay with USDC — no account needed.

Cost Transparent

Simple credit-based pricing. Know the exact cost before you call. No surprises.

Why consensus wins

Single model vs. LLM Consensus

Single Model
Accuracy ×Varies by prompt
Hallucinations ×No built-in detection
Bias ×Single perspective
Quality ×Model-dependent
Speed Fast
LLM Consensus
Accuracy ✓Cross-validated, consistently higher
Hallucinations ✓Cross-model verification
Bias ✓Multiple perspectives synthesized
Quality ✓Measurable quality score
Speed 10-60s depending on mode

Trusted infrastructure

Built for production

10,000+
API calls processed
99.9%
Uptime
0.89
Avg quality score
3
Frontier models orchestrated
GDPR Ready Patent Pending: US 19/215,933 & EU EP25176020.3 SOC2 Roadmap API-first Architecture 100% Non-Inferiority Benchmark

FAQ

Frequently asked questions

How does consensus improve over using a single model?
Each model has different strengths and blind spots. By running multiple frontier models simultaneously, cross-evaluating their responses, and synthesizing the best elements, LLM Consensus produces answers that are more accurate, more complete, and have fewer hallucinations than any single model alone. Our quality scoring shows an average improvement of 15-30% over individual model responses.
Which models do you orchestrate?
Deep mode orchestrates 5 frontier models: GPT-5.4 (OpenAI), Claude Opus 4.6 (Anthropic), Gemini 3.1 Pro (Google), Mistral Large 2 (Mistral AI), and Llama 3.3 70B (Meta/Together AI). Balanced mode uses 3 models: GPT-5.4, Claude Sonnet 4.6, and Gemini 3 Pro. Fast mode uses lighter versions: GPT-5.4 Mini, Claude Haiku 4.5, and Gemini 2.5 Flash. You can also specify exactly which models to use per request.
What's the latency for each mode?
Fast mode: ~10 seconds (3 lightweight models, single pass). Balanced mode: ~25 seconds (3 models with iterative refinement). Deep mode: ~90 seconds (5 frontier models with full convergence and 5 specialist roles). All modes support real-time SSE streaming so you can see progress as it happens.
How is pricing calculated?
Three payment options: AI agents pay per-request with USDC via x402 ($0.05 fast, $0.35 balanced, $4.50 deep) with 0% platform fee. Developers buy credit packs with card (€49-€399) or USDC (€50-€500, lower fees + higher bonuses). Credits cost: fast = 1, balanced = 3, deep = 20. Credits never expire. Volume discounts: Bronze 5% (500+), Silver 10% (2000+), Gold 15% (5000+). Every new account gets 5 free trial credits.
Is my data stored or used for training?
Your prompts are sent to the LLM providers (OpenAI, Anthropic, Google) for processing but are NOT stored by us beyond the request lifecycle. We do not use your data for training any models. Usage logs (metadata only, not prompt content) are retained for 90 days. See our Privacy Policy for full details.
Can AI agents use this API?
Absolutely — we're built agent-first. AI agents can pay per-request via the x402 protocol (USDC on Base L2) with zero registration — just send USDC, include the tx proof in the X-Payment header, and get results. No account, no API key, no sign-up. For agents that prefer accounts, traditional API key auth is also available. We support structured JSON responses, webhook callbacks, idempotent requests, batch processing, and machine-readable error codes. Check /llms.txt and /.well-known/ai-plugin.json for agent discovery.
Do you offer enterprise plans?
Yes. Enterprise plans include custom model selection, dedicated rate limits, SLA guarantees, priority support, and volume pricing. Contact sales@llmconsensus.io.

Payment Methods

Three ways to pay. Zero friction.

Whether you're an autonomous AI agent or a human developer, we have the payment method that fits your workflow.

AI Agents
x402 Protocol

Permissionless, per-request payments with USDC on Base L2. No account, no API key, no registration. Just send USDC and include the tx proof in your request header. Purpose-built for autonomous AI agents.

No account required
Pay-per-request (no prepaid balance)
On-chain verification on Base L2
0% platform fee
Spec-compliant: x402.org
Per-request pricing
Fast $0.05  |  Balanced $0.35  |  Deep $4.50
Developers
Credit Card (Stripe)

Traditional card payments via Stripe. Register once, buy credit packs, and use your API key. Best for teams and companies with procurement processes that require invoices and receipts.

Visa, Mastercard, Amex accepted
Prepaid credit packs (never expire)
Volume discounts up to 15%
Instant receipt & dashboard
Credit packs
€49 (200cr)  |  €149 (700cr)  |  €399 (2000cr)
Crypto Users
USDC Top-Up

Buy credit packs with USDC on Base via NOWPayments. Same account-based system as cards but with lower fees and better bonuses. Ideal for crypto-native developers.

USDC on Base L2
Only 0.5% fee (vs 2.9% card)
Higher credit bonuses
No KYC for payments
Crypto packs
€50 (165cr)  |  €100 (350cr)  |  €500 (2200cr)

Pricing

Simple, credit-based pricing

No subscriptions. Buy credits, use them whenever. They never expire.

Starter
€49
200 credits
All 3 orchestration modes (3-5 models)
10 requests/minute
SSE streaming
Email support
Get Started
Popular
Pro
€149
700 credits
Everything in Starter
30 requests/minute
Batch processing
Webhook callbacks
Priority support
Get Started
Business
€399
2,000 credits
Everything in Pro
100 requests/minute
Custom model selection
Dedicated support
Volume discounts
SLA guarantee
Contact Sales

All plans include 5 free trial credits. No credit card required to start.

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