Free and open first
Best Ai Development Tools in 2026
These tools let you create and connect AI applications. This list is for people comparing software by cost, model access, deployment options, and coding support.
- 26 apps
- Research read 7 Oct 2026
- How the order is worked out
- 1
Dify
Free plan Open source APIExtensionLinux+4Dify brings workflow building, knowledge retrieval, model connections, and several publishing options into one platform.
- 2
Cursor
Free plan APIiPhoneLinux+3Cursor offers coding-agent workflows from a free entry plan through paid individual, team, and enterprise options.
- 3
Bolt.new
Free plan AndroidiPhoneWebBolt.new combines prompt-based project creation with hosting, databases, and integrations. Consider its browser requirements and Free plan token limits when choosing a plan.
- 4
CrewAI AMP
Free plan APISelf-hostedWebChoose CrewAI AMP if your team needs several ways to build multi-agent workflows alongside tracing and governance controls.
- 5
Flowise
Free plan APILinuxMac+3Flowise offers visual workflow construction, integrations, and deployment options, but its wind-down is a central consideration.
- 6
Hugging Face Hub
Free plan APILinuxWebHugging Face Hub combines repositories, app hosting, collaboration, storage, and inference options for machine learning work.
- 7
LlamaIndex
Free plan APILinuxSelf-hosted+1LlamaIndex combines document parsing, extraction, classification, and retrieval pipelines for teams building document-centered AI workflows.
- 8
- 9
Haystack
Free plan APISelf-hostedHaystack provides a free framework for assembling AI systems from modular pipelines, with integrations and self-hosted deployment options.
- 10
LangChain
Free plan APISelf-hostedChoose LangChain to build agents around models and tools using its configurable harness, middleware, and wide range of integrations.
- 11
NVIDIA NeMo Evaluator
Free plan APILinuxSelf-hostedChoose NeMo Evaluator if you need an open-source way to assess generative AI models, RAG pipelines, or agents across multiple evaluation methods.
- 12
- 13
Langflow
Free plan APILinuxMac+3Langflow offers visual workflow building alongside Python extensibility, API use, and agent and MCP support. Its execution and isolation model requires care, particularly for multi-tenant deployments.
- 14
Replicate
Free plan APIWeb6.7 Visit site - 15
AutoGen
Free plan LinuxMacWindows - 16
Axolotl
Free plan LinuxMacWindows - 17
- 18
Google AI Studio
Free plan Web - 19
Microsoft Azure AI Foundry
Free plan MacWebWindows - 20
GroqCloud
Free plan Web - 21
Fireworks AI
Paid APISelf-hostedWeb5.7 Visit site - 22
Vercel AI SDK
Free plan - 23
Together AI Dedicated Inference
Paid APIWeb - 24
Databricks Mosaic AI
Paid Web - 25
OpenAI API
Paid Web4.0 Visit site
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
Check whether a tool has a free plan, a trial period, or open-source code. Review the licence, paid starting price, credit limits, and platform support before choosing.
Questions
Are free plans available for these AI development tools?
Some entries provide a free plan. Check the terms for included features, credits, and limits before relying on it.
Can I find open-source tools here?
Some entries provide open-source code. Review the project licence before using or modifying the code.
Can I try a paid tool before subscribing?
A free trial is offered by items on this list. Trial length and access depend on the tool, so check its current terms.
Which platforms do these tools support?
The entries cover web, API, Linux, self-hosted, macOS, and Windows environments. Check the platform details for the tool you are considering.
What should I compare between tools?
Assess free-plan terms, starting paid price, model and API availability, deployment targets, agent workflows, code generation, and monthly AI credits.