AI · alternatives · 2026
24 alternatives to Best API
OpenAI-compatible API workflow, 25% lower cost
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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OpenAI o1 API ▲458OpenAI's most advanced model, o1 API to third-party devs
2024 · developers.openai.com · its alternatives →
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Estimate price for using OpenAI API
2023 · invertedstone.com · its alternatives →
- 3
Calculate and compare the cost of the latest LLM APIs
2024 · docsbot.ai · its alternatives →
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API Pick▲71Data APIs for AI agents & developers — free to start
Feb 2026 · apipick.com · its alternatives →
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OpenAI Cookbook▲135Examples and guides for using the OpenAI API
2023 · github.com · its alternatives →
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Easy to use Smart API for indie developers and start-ups
2025 · intelligent-api.com · its alternatives →
- 11
Hi, I'm working on a project that regroups all best AI (AIaaS) from different providers (GCP, AWS, Azure, DeepL, etc.) in one API (https://github.com/edenai/edenai-apis). I've got asked the question : why aren't you regrouping Open Source models (instead of proprietary APIs) into one repo? Well because it doesn't make sens to deploy and maintain large pytorch (or other framework) AI models (especially for document parsing, image and video moderation or speech recognition) in every solution that wants AI capabilities. So using APIs makes way more sens. Deployed OpenSource…
2023 · github.com · its alternatives →
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api2ai parses OpenAPI Spec to generate an agent that can make API calls. For context, I recently need to explore a handful of API suites and thought LLMs can help expedite this process. After some digging, I found OpenAPI Specs are perfect fit for function calling. Based on a text prompt, api2ai can select the right endpoint and properly parse request params and make api calls. It also handles authentication, currently it supports basic auth, api keys, and bearer token schemes. The tool has helped me explore and see APIs in action without a deep dive into the docs or using postman. It’s open…
2023 · github.com · its alternatives →
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Estimate price for using different AI model API's
2025 · tap2solve.com · its alternatives →
- 17
Clean up your AI bills with one line of code
2025 · its alternatives →
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Low-cost AI API gateway for OpenAI-compatible developer tool
Jul 2026 · yesapi.online · its alternatives →
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APIMart▲8One API for All the Best AI Models – Try Affordable AI API
Nov 2025 · apimart.ai · its alternatives →
- 21
Every open-source model. One flat rate.
Feb 2026 · cheapestinference.com · its alternatives →
- 22
See where your AI API cost & tokens go — no API key needed
Jul 2026 · reasoningdensity.com · its alternatives →
- 23
i built an open source version of OpenAI Assistants API it's compatible with any LLM & embeddings model and u can swap it out for OpenAI assistants API with just one line of code. if you want this let me know 👇
2023 · twitter.com · its alternatives →
- 24
Self-hosted alternative to OpenAI's Responses API compatible with Agents SDK and works with all model providers (Claude/R1/Qwen/Ollama etc) - open-responses/open-responses
2025 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →