Comparison

Google Agent Development Kit vs Haystack

No leader: the top candidate Google Agent Development Kit has only 0.29 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Google Agent Development Kit full profile →Haystack full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

Google Agent Development Kit74

Haystack65

Attribute comparison across 2 tools
Attribute	Google Agent Development Kit	Haystack
Vioscale score	74 / 100low · 29%	65 / 100medium · 62%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	free	low
Transparentpricing.transparent	✓	✗
Integrations
Countintegrations.count	42	14
Security
Scorecardsecurity.scorecard	-	9.4
Vulnerabilitiessecurity.vulnerabilities	-	Count: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=farm-haystack&per_page=100 · Last 12m: 0 · Max severity: CRITICAL
Adoption
Dependent reposadoption.dependent_repos	-	237
Github starsadoption.github_stars	185	26,323
Package downloads weeklyadoption.package_downloads_weekly	-	199,336
Activity
Commits last 30dactivity.commits_last_30d	85	100
Release
Cadence daysrelease.cadence_days	13	1
Historyrelease.history	9 items	20 items
License
Spdxlicense.spdx	Apache-2.0	Apache-2.0
Language
Primarylanguage.primary	Kotlin	Python
Market
Availabilitymarket.availability	Available worldwide · HQ US	Available worldwide

Score

Vioscale score

Google Agent Development Kit74 / 100low · 29%

Haystack65 / 100medium · 62%

Pricing

Free tier

Google Agent Development Kit✓

Haystack✓

Model

Google Agent Development Kitcommercial

Haystackcommercial

Price level

Google Agent Development Kitfree

Haystacklow

Transparent

Google Agent Development Kit✓

Haystack✗

Integrations

Count

Google Agent Development Kit42

Haystack14

Security

Scorecard

Google Agent Development Kit–

Haystack9.4

Vulnerabilities

Google Agent Development Kit–

HaystackCount: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=farm-haystack&per_page=100 · Last 12m: 0 · Max severity: CRITICAL

Adoption

Dependent repos

Google Agent Development Kit–

Haystack237

Github stars

Google Agent Development Kit185

Haystack26,323

Package downloads weekly

Google Agent Development Kit–

Haystack199,336

Activity

Commits last 30d

Google Agent Development Kit85

Haystack100

Release

Cadence days

Google Agent Development Kit13

Haystack1

History

Google Agent Development Kit9 items

Haystack20 items

License

Spdx

Google Agent Development KitApache-2.0

HaystackApache-2.0

Language

Primary

Google Agent Development KitKotlin

HaystackPython

Market

Availability

Google Agent Development KitAvailable worldwide · HQ US

HaystackAvailable worldwide

Capabilities

Feature-by-feature on the axes that matter for multi agent orchestration. “-” means undocumented, not absent.

Capability comparison for Multi Agent Orchestration
Capability	Google Agent Development Kit	Haystack
Capabilities
Architecture paradigm	Graph based cycles	Graph based cycles
Native memory and state persistence layer	✓	✓
Dynamic agent generation and spawning at runtime	✓	-
Synchronous and asynchronous execution modes	✓	-
Tool calling and function schema validation	✓	✓
Streaming output and intermediate step yielding	✓	-
Fault tolerance and LLM retry mechanisms	✓	-
Managed cloud runtime infrastructure offered	✓	✓
Native observability and trace logging	✓	✓
SOC2 type ii	✗	-
Mit or apache permissive oss license	✓	-
Pricing model	Free open source	Free open source

Capabilities

Architecture paradigm

Google Agent Development KitGraph based cycles

HaystackGraph based cycles

Native memory and state persistence layer

Google Agent Development Kit✓

Haystack✓

Dynamic agent generation and spawning at runtime

Google Agent Development Kit✓

Haystack-

Synchronous and asynchronous execution modes

Google Agent Development Kit✓

Haystack-

Tool calling and function schema validation

Google Agent Development Kit✓

Haystack✓

Streaming output and intermediate step yielding

Google Agent Development Kit✓

Haystack-

Fault tolerance and LLM retry mechanisms

Google Agent Development Kit✓

Haystack-

Managed cloud runtime infrastructure offered

Google Agent Development Kit✓

Haystack✓

Native observability and trace logging

Google Agent Development Kit✓

Haystack✓

SOC2 type ii

Google Agent Development Kit✗

Haystack-

Mit or apache permissive oss license

Google Agent Development Kit✓

Haystack-

Pricing model

Google Agent Development KitFree open source

HaystackFree open source

What each one is

The product in its own terms, so the numbers below have context.

Google Agent Development Kit

A multi-language agent development framework that enables developers to create production-grade AI agents with built-in tools for orchestration, memory management, code execution, and deployment to cloud or self-hosted infrastructure.

Independently observed

Haystack

A Python-based orchestration tool for creating and deploying intelligent applications powered by language models. Developers assemble reusable components (data retrieval, model integration, tool execution) into customizable workflows, from question-answering systems to multi-step autonomous agents, deployable on private infrastructure or in the cloud.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Google Agent Development Kit

Open sourceFree tier

Free and open-source under Apache 2.0 license

as of 2026-08-21verify ↗

Haystack

HybridFree tier

Free open-source core with commercial enterprise options

Open SourceFree
Enterprise StarterContact sales
Enterprise PlatformContact sales

as of 2026-08-21verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Google Agent Development Kit	Haystack
WebPlatforms	✓	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✗	✓
HybridDeployment	✗	✓

Platforms

Web

Google Agent Development Kit✓

Haystack✓

CLI

Google Agent Development Kit✓

Haystack✗

Deployment

Cloud / SaaS

Google Agent Development Kit✓

Haystack✓

Self-hosted

Google Agent Development Kit✓

Haystack✓

On-premise

Google Agent Development Kit✗

Haystack✓

Hybrid

Google Agent Development Kit✗

Haystack✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (3)

Anthropic
OpenTelemetry
Hugging Face

Google Agent Development Kit

43 total - 40 not shared

Google Search
Google Maps
Vertex AI Search
Google Ads
Meta
LinkedIn
TikTok
Aerospike
Firebase
Firestore
GitHub
Google Workspace
Google Calendar
Salesforce
Slack
Figma
Linear
Notion
MongoDB
Milvus
Grafana Cloud
Langfuse
LangSmith
Freeplay
+16 more

Independently observed

Haystack

22 total - 19 not shared

OpenAI
Mistral
Weaviate
Pinecone
Elasticsearch
AstraDB
Apify
ReadMe
Azure OpenAI
Datadog
SerperDev
SearchApi
Cohere
AWS Bedrock
FAISS
AWS SageMaker
OpenSearch
Google Colab
MCP servers

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.