Build with collective intelligence
One API call. Four AI models. One synthesized answer. Query GPT, Claude, Gemini, and Grok simultaneously and get a unified response that's better than any single model.
Quick Start
Up and running in seconds
curl -X POST https://synero.ai/api/query \
-H "Authorization: Bearer sk_live_your_key_here" \
-H "Content-Type: application/json" \
-d '{
"prompt": "What are the trade-offs between microservices and monoliths?"
}'The response streams as server-sent events — each advisor's tokens arrive in real time, followed by the synthesis.
Features
Everything you need to integrate
A single endpoint that orchestrates multiple AI models, synthesizes their responses, and streams everything to your application.
4 Models, 1 Call
GPT, Claude, Gemini, and Grok queried simultaneously. Each advisor brings unique strengths and reasoning styles.
Real-time SSE Streaming
Watch each advisor respond token-by-token in parallel, then see the synthesis emerge live.
Intelligent Synthesis
A master synthesizer reads all four responses, resolves contradictions, and produces a unified answer.
Customizable Council
Choose which of the 15 available models powers each advisor slot and the synthesizer.
Conversation Threads
Build multi-turn conversations with thread IDs and history context for follow-up questions.
Simple Auth & Limits
Bearer token authentication. 60 requests/min per key. Manage keys from your dashboard.
Models
15 models from 4 providers
Mix and match any model for any advisor slot. Use the defaults or build your own custom council.
OpenAI
- gpt-5.4
- gpt-5.2
- gpt-4.1
- gpt-4.1-mini
- o4-mini
Anthropic
- claude-opus-4-6
- claude-sonnet-4-6
- claude-haiku-4-5
- gemini-3.1-pro-preview
- gemini-3-flash-preview
- gemini-2.5-pro
- gemini-2.5-flash
xAI
- grok-4
- grok-4-1-fast-reasoning
- grok-3-mini
Reference
SSE event types
The response stream emits these event types. Each event includes a JSON data payload.
| Event | Data Fields | Description |
|---|---|---|
advisor | id, token, status | Incremental token from an advisor |
advisor-complete | id, modelId, inputTokens, outputTokens, latencyMs | Advisor finished responding |
advisor-error | id, error | Advisor encountered an error |
synthesis | token, status | Incremental token from the synthesizer |
synthesis-complete | inputTokens, outputTokens | Synthesis finished |
complete | queryId | Entire council query is done |
error | message | Fatal error occurred |
Start building today
Get your API key and start querying the council in minutes. Pay per token with your Synero credit balance.