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Head-to-head · Tool Calling

Flowise vs Kong AI Gateway

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Flowise #2 in Tool Calling 8.4/10 Free plan Free plan✓ 0 of 3 features Visit Flowise
Kong AI Gateway #5 in Tool Calling 8.1/10 30-day trial Free trial✓ 0 of 3 features Visit Kong

Flowise leads on 1 check, Kong AI Gateway on 0, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreFlowise · 8.4/10
  • Free planonly Flowise
  • Free trialonly Kong AI Gateway

Flowise scores higher on our rubric for tool calling: 8.4 against 8.1 out of 10; our editors rank them #2 and #5.

Flowise offers free plan; Kong AI Gateway doesn't.

Flowise is the better fit for builders assessing visual tool-calling workflows. Kong AI Gateway is the better fit for enterprises governing AI, MCP, and A2A traffic.

  • Flowise fits best

    Builders assessing visual tool-calling workflows

  • Kong AI Gateway fits best

    Enterprises governing AI, MCP, and A2A traffic

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Flowise 8.4/10 Visit ↗ Kong AI Gateway 8.1/10 Visit ↗
At a glance
Editor score 8.4 8.1
Ranking #2 in Tool Calling #5 in Tool Calling
Best for Builders assessing visual tool-calling workflows Enterprises governing AI, MCP, and A2A traffic
Pricing model Free plan + paid Paid
Starting price $35/mo —
Free plan ✓ (best) —
Free trial — 30 days
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Community, Docs, Email Email, Tickets
Integrations 6 integrations 14 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Flowise 0/3 · Kong AI Gateway 0/3
Parallel tool calls Not checked yet Not checked yet
Structured outputs Not checked yet Not checked yet
Call observability Not checked yet Not checked yet
Specs
Protocol support Not checked yet Not checked yet
Deployment Not checked yet Not checked yet
Tool-choice control Not checked yet Not checked yet
Authentication methods Not checked yet Not checked yet
Our review
Pros
  • Visual builders cover assistants, chatflows, and multi-agent Agentflows
  • Supports tool calling, custom tools, and MCP integration
  • Offers cloud and self-hosted deployment
  • Routes and load-balances requests across multiple LLM providers.
  • Supports LLM, MCP, and A2A traffic with access and governance controls.
  • Tracks token use, cost, latency, and errors with spend controls.
Cons
  • Development ceased on July 29, 2026
  • The repository was archived on August 10, 2026
  • Official core-team operations ended on August 31, 2026
  • There is no perpetual free plan; the $0 offer lasts 30 days.
  • Fully self-hosted API gateways are listed as an Enterprise feature.
  • Support channels are email and ticket.
Our verdict

Flowise is an open-source platform for visually building AI agents, chatbots, and LLM workflows. Its Assistant, Chatflow, and Agentflow builders target developers and teams that want to assemble tool-calling workflows, coordinate agents,…

Read the review →

Kong AI Gateway gives platform and infrastructure teams a gateway for managing traffic among applications, agents, MCP servers, and large language model providers. Its tool-calling relevance comes from support for MCP and A2A traffic…

Read the review →
  1. FlowiseTool Calling 8.4Free plan
  2. Kong AI GatewayTool Calling 8.130-day trial

Strengths and trade-offs

  • Flowise — where it wins

    • Visual builders cover assistants, chatflows, and multi-agent Agentflows
    • Supports tool calling, custom tools, and MCP integration
    • Offers cloud and self-hosted deployment

    Where it doesn't

    • Development ceased on July 29, 2026
    • The repository was archived on August 10, 2026
    • Official core-team operations ended on August 31, 2026

  • Kong AI Gateway — where it wins

    • Routes and load-balances requests across multiple LLM providers.
    • Supports LLM, MCP, and A2A traffic with access and governance controls.
    • Tracks token use, cost, latency, and errors with spend controls.

    Where it doesn't

    • There is no perpetual free plan; the $0 offer lasts 30 days.
    • Fully self-hosted API gateways are listed as an Enterprise feature.
    • Support channels are email and ticket.
  • Flowise8.4/10 · Free plan

    Visual agent building with tool calling, now archived after official operations ended.

    Visit FlowiseFull verdict →
  • Kong AI Gateway8.1/10 · 30-day trial

    A gateway for governing AI and tool traffic across models, with routing and spend controls.

    Visit KongFull verdict →

More comparisons

All tool calling comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update