Alternatives · 2026
Best Prompteus Alternatives in 2026
24 alternatives · 20 with a free plan · Updated
What are the best Prompteus alternatives?
The best Prompteus alternatives for AI API in 2026 are Portkey (AI gateway and observability platform, free), Ottic (testing and evaluation tool for LLM applications, enterprise) and LLM Gateway (open source API gateway, free). 20 of the 24 listed alternatives have a free or freemium plan.
Looking for something other than Prompteus? Below are 24 alternatives in AI API, AI Developer Tools and AI Monitor, all closely matched, ranked by how much they overlap with Prompteus. Prompteus itself is free. Each entry shows what the tool does, what it shares with Prompteus, its key features and pricing.
What is Prompteus?
Developers who want AI features in their product without hand-writing every integration are the people Prompteus is built for. Prompteus is a no-code AI workflow platform that lets you build, deploy and scale workflows across several large language models from one editor. The pitch centers on cost.
- Categories
- AI APIAI Developer ToolsAI MonitorAI WorkflowLarge Language Models (LLMs)No-Code&Low-CodeOther
- Pricing
- Free
Key features of Prompteus
- No-code AI workflow platform with multi-LLM support and cost optimization
Prompteus alternatives compared
| Tool | Pricing | Shared with Prompteus | Match |
|---|---|---|---|
| Prompteus | Free | — | Original |
| Portkey | Free | AI API, AI Developer Tools, AI Monitor, Large Language Models (LLMs), Other | Strong match |
| Ottic | Enterprise | AI API, AI Developer Tools, AI Monitor, AI Workflow, Large Language Models (LLMs), Other | Strong match |
| LLM Gateway | Free | AI API, AI Developer Tools, Large Language Models (LLMs), Other | Strong match |
| Fleak | Free | AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code, Other | Strong match |
| RouterBase | Free | AI API, AI Developer Tools, Large Language Models (LLMs), Other | Strong match |
Top 24 alternatives to Prompteus
- #1
Portkey is an AI gateway and observability platform that helps developers monitor, route, and control calls to large language model apps.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, Large Language Models (LLMs), Other
- It also provides an MCP client to build AI agents with access to real-world tools
Pricing: free
- #2
Ottic is a testing and evaluation tool for LLM applications that helps QA and engineering teams check app behavior before product releases.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, AI Workflow, Large Language Models (LLMs), Other
- Reduces time to market for LLM applications
- Facilitates collaboration between technical and non-technical teams
- Provides comprehensive test coverage and visibility into LLM app behavior
Pricing: custom quote
- #3
LLM Gateway is an open source API gateway that routes, manages, and tracks costs of requests to many large language model providers.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Fully open source under an MIT license
- Unified API compatible with OpenAI format for easy migration
- Supports a wide range of LLM providers
Pricing: free
- #4
Fleak is a serverless API builder for AI workflows that lets data teams connect integrations and publish them as APIs.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code, Other
Pricing: free
- #5
Single API gateway that routes requests across 200+ AI models for text, image and video generation, with unified billing.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Unified API gateway for 200+ AI models with smart routing and unified billing
Pricing: free
- #6
OpenAI-compatible API layer that cuts inference costs by 25% with minimal code changes.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- OpenAI-compatible API layer offering 25% lower costs with minimal migration efforts
Pricing: free
- #7
Open-source LLM observability platform that helps developers monitor, debug, and improve AI apps by tracking their model requests.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, Large Language Models (LLMs), Other
- Hobby Kickstart your AI project
- Requests and Dashboard
- Scale beyond 10k requests
Pricing: free plan, paid plans from $20
- #8D
Discuro is an AI workflow builder where developers design, test, and call chained OpenAI prompts from a UI or API.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, AI Workflow, Large Language Models (LLMs), Other
- All-in-one platform for building
Pricing: free
- #9
LiteLLM is an open source LLM gateway that lets developers call over 100 large language models through one OpenAI-format API and track spend.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
Pricing: free
- #10
UsageGuard is an AI gateway that gives developers one API for many AI models, with security safeguards, cost control, and usage tracking.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, Large Language Models (LLMs), Other
- It provides AI security
Pricing: custom quote
- #11
CodingPlanX is an AI gateway that gives developers one API key for 600+ large language models from multiple providers.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- A unified AI gateway providing access to 600+ models with one API key
Pricing: custom quote
- #12
MakeHub is an AI API load balancer that routes calls across model providers to cut costs and add failover protection.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Significant cost reduction (up to 50%) on AI API calls
- Improved response speed (up to 2x faster)
- High reliability and uptime (99.99%) with consistent response times
Pricing: free
- #13
UbiOps is an AI model serving platform that deploys and manages machine learning models and LLMs without managing Kubernetes or cloud infrastructure.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, AI Workflow, Large Language Models (LLMs), Other
- AI model serving and orchestration platform for deploying and managing AI workloads
Pricing: free
- #14
OfoxAI is a unified API gateway that gives developers one interface to call over 100 large language models, including GPT and Claude.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Unified API gateway to access 100+ LLMs like GPT
Pricing: free
- #15
DataRobot is an AI platform for deploying, monitoring, and governing machine learning models in production.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, AI Workflow, Large Language Models (LLMs), Other
Pricing: free
- #16
Open-source LLMOps platform for building, running and monitoring generative AI apps, with LLM workflows, knowledge documents and an API.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code, Other
- Open-source LLMOps platform for building and operating generative AI applications
Pricing: free plan, paid plans from $59
- #17
AI gateway that compresses prompts at the edge to cut LLM costs by up to 50% while routing to 200+ models.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
Pricing: free
- #18M
Mavenly is a no-code AI pipeline builder that also connects businesses and users with freelance AI specialists for outsourced AI work.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, No-Code&Low-Code, Other
- A no-code AI pipeline platform connecting users with AI professionals
Pricing: free
- #19
Vapi is a developer platform for building, testing, and deploying voice AI agents, with a configurable API and 40+ app integrations.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code
- Developer-friendly API
- Configurable and scalable
- Integrates with 40+ apps
Pricing: custom quote
- #20
TUNiB offers sLLM, chatbot, and NLP API solutions for businesses that want customizable language AI with a focus on AI ethics and safety.
In common with Prompteus: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Wide range of AI solutions including sLLM
- Focus on AI ethics and safety
- Customizable solutions tailored to specific needs
Pricing: free
- #21
MCP Playground is an AI workflow tool for testing, debugging, and connecting MCP servers, with secure internal document search.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code, Other
- Offers flexible deployment options (on-computer
- Focuses on data security and compliance (SOC 2
- HIPAA
Pricing: free
- #22K
Keywords AI is an LLM API and monitoring platform for building, deploying, and tracking OpenAI-style AI apps at a lower cost than GPT-4.
In common with Prompteus: AI API, AI Developer Tools, AI Monitor, Large Language Models (LLMs), Other
- Cost-effective alternative to GPT-4
- Easy integration with OpenAI style API call
- Unified platform for building
Pricing: free
- #23
BasicPrompt is a prompt engineering platform for writing, versioning, and deploying one prompt across several AI models.
In common with Prompteus: AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code, Other
- Simplifies prompt engineering for multiple AI models
- Facilitates team collaboration and version control
- Reduces the need for model-specific prompt rewriting
Pricing: free
- #24P
Spreadsheet-based bulk AI batch processing tool that runs ChatGPT prompts across rows at once for teams.
In common with Prompteus: AI API, AI Developer Tools, AI Workflow, Large Language Models (LLMs), No-Code&Low-Code
- Saves time by processing tasks in bulk
- Facilitates team collaboration
- Offers a user-friendly spreadsheet interface
Pricing: free
How we picked these Prompteus alternatives
We rank tools by how closely they match Prompteus: tools that share more of its categories rank first, then tools whose main category, tags and description overlap with it, then community votes and views. Pricing type and features come from each product's SoftwareVital listing. Admins can pin or remove tools from this list.
Frequently asked questions
What are the best alternatives to Prompteus in 2026?
The closest alternatives to Prompteus are Portkey, Ottic, LLM Gateway, Fleak and RouterBase. They are ranked by how many categories and tags they share with Prompteus and how similar their descriptions are, then by community votes and views on SoftwareVital.
What is the closest alternative to Prompteus?
Portkey is the closest match because it shares AI API, AI Developer Tools and AI Monitor with Prompteus. It is free.
Are there free alternatives to Prompteus?
Yes. 20 of the 24 alternatives have a free or freemium plan, including Portkey (free), LLM Gateway (free), Fleak (free), RouterBase (free) and Best API (free). Prompteus is free.
Which Prompteus alternatives are paid or enterprise tools?
Ottic (enterprise), UsageGuard (enterprise), CodingPlanX (enterprise) and Vapi (enterprise) use paid or enterprise pricing, which usually means more support and admin options for teams.
How does Prompteus compare to Portkey?
Portkey overlaps with Prompteus in AI API, AI Developer Tools and AI Monitor. Its listed features include it also provides an MCP client to build AI agents with access to real-world tools. Pricing: free. Open the side-by-side compare page for a full breakdown.
What category is Prompteus in?
Prompteus is listed under AI API on SoftwareVital. Browse that category to see more tools in the same group.