nowfound

Dev tools · alternatives · 2026

24 alternatives to Resonance - API rate limiter

Rate limit LLMs/any API calls, avoiding surprises on bills

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Resonance - API rate limiter launched in 2024; newer entries below may have overtaken it.

  1. 1
    Rately▲175

    Take control of your API traffic with custom rate limits.

    Oct 2025 · its alternatives →

  2. 2
    Limitr▲65

    Pricing infrastructure for AI/SaaS products

    Feb 2026 · limitr.dev · its alternatives →

  3. 3RY

    Hey HN, we've just finished building a dynamic router for LLMs, which takes each prompt and sends it to the most appropriate model and provider. We'd love to know what you think! Here is a quick(ish) screen-recroding explaining how it works: https://youtu.be/ZpY6SIkBosE Best results when training a custom router on your own prompt data: https://youtu.be/9JYqNbIEac0 The router balances user preferences for quality, speed and cost. The end result is higher quality and faster LLM responses at lower cost. The quality for each candidate LLM is predicted ahead of time…

    2024 · unify.ai · its alternatives →

  4. 4
    Taylor AI▲118

    Fine-tune open source LLMs in minutes

    2023 · its alternatives →

  5. 5PP

    The LLM providers are constantly adding new models and updating their API prices. Anyone building AI applications knows that these prices are very important to their bottom line. The only place I am aware of is going to these provider's individual website pages to check the price per token. To solve this inconvenience I spent a few hours making pricepertoken.com which has the latest model's up-to-date prices all in one place. Thinking about adding image models too especially since you have multiple options (fal, replicate) to use the same model and the prices are not always the same.

    2025 · pricepertoken.com · its alternatives →

  6. 6

    Avoid OpenAI downtimes - one API for 30+ LLMs

    2023 · its alternatives →

  7. 7
    LLMTest▲125

    Use the right LLMs in your apps. Setup fallbacks. Be happy.

    May 2026 · llmtest.io · its alternatives →

  8. 8

    LLM Provider arbitrage to get the best performance for the $

    2025 · makehub.ai · its alternatives →

  9. 9NB
  10. 10

    Rate-limiting based on token bucket algorithm for Java

    2021 · its alternatives →

  11. 11

    Prompt instructions like 'never do X' don't hold up in production. LLMs ignore them when context gets long or users push hard. Limits sits between your agent and the real world. Every action — database writes, API calls, refunds — gets intercepted and checked against your rules before it executes. Deterministically. No LLM involved in enforcement. Three modes: Conditions: hard rules on structured data Guideance: validate LLM output before it reaches the user and give the agent chance to reason and retry Guardrails: scan for PII, toxicity, prompt injection etc One line to integrate: npm…

    Feb 2026 · limits.dev · its alternatives →

  12. 12

    Check if your input satisfies the token limit of an AI model

    2023 · its alternatives →

  13. 13

    Cost effective LLM inference API for startups & developers

    2024 · awanllm.com · its alternatives →

  14. 14EC

    Hi! I've found myself repeatedly writing little scripts to do bulk calls to LLMs for various tasks. For example, run some analysis on a large list of records. There are a few "gotchas" to doing this. For example, some service providers have rate limits, and some models will not reliably return JSON (if you're asking for it). So, I've written a command for this. What I've tried to do here is let the user break up prompts and configuration as they see fit. For example, you can have a prompt file which includes the API key, rate limit, settings, etc. all together, or break these up into…

    2025 · github.com · its alternatives →

  15. 15

    Smart Limit, Dynamic Adjust, Stable Flow.

    2025 · github.com · its alternatives →

  16. 16

    An AI Cost Optimization Infrastructure for LLM Applications

    Mar 2026 · getpromptly.in · its alternatives →

  17. 17LF

    We’ve built a LLM fine-tuning SDK that supports Llama 3.1 right now. We’d love your feedback, and are happy to give extra free credits if you try the product and jump on a 15 minute call and provide feedback :)

    2024 · docs.luminolabs.ai · its alternatives →

  18. 18

    The context manager and skills library for marketing teams

    Apr 2026 · promptr.ai · its alternatives →

  19. 19AP

    Hey HN! We've run our privacy-focused open-source inference company for a while now, and we're launching a flat monthly subscription similar to Anthropic's. It should work with Cline, Roo, KiloCode, Aider, etc — any OpenAI-compatible API client should do. The rate limits at every tier are higher than the Claude rate limits, so even if you prefer using Claude it can be a helpful backup for when you're rate limited, for a pretty low price. Let me know if you have any feedback!

    2025 · synthetic.new · its alternatives →

  20. 20LS

    Hi HN! Stefan here from superglue and today I’d like to share a new benchmark we’ve just open sourced: an Agent-API Benchmark, in which we test how well LLMs handle APIs. We gave LLMs API documentation and asked them to write code that makes actual API calls. Things like "create a Stripe customer" or "send a Slack message". We're not testing if they can use SDKs; we're testing if they can write raw HTTP requests (with proper auth, headers, body formatting) that actually work when executed against real API endpoints and can extract relevant information from that response. tl:dr: LLMs suck at…

    2025 · github.com · its alternatives →

  21. 21

    Avoid 429 error by limiting requests made per time frame

    2023 · its alternatives →

  22. 22

    Hi HN, I was once given the advice: Don't waste expensive frontier model credits (GPT/Claude/etc.) on bulk work. Send the boring, repetitive, high-volume jobs to a smaller model, and save the expensive prompts for when you actually need frontier-level reasoning. I complained and told my manager that I shouldnt have to think about using certain models for certain coding tasks, and that one model should handle everything. Well, here we are anyway. If anyone needs a place to absolutely abuse an LLM with high-volume tasks, come beat ours up at https://yolo-auto.com. Here are…

    Jul 2026 · yolo-auto.com · its alternatives →

  23. 23

    Make LLMs Hallucinate Less

    2024 · anote.ai · its alternatives →

  24. 24

    AI without limits. Unlimited tokens. Unlimited context. Predictable intelligence capacity without metering every token. Private by design. Production SLAs.

    Jul 2026 · liquidbrain.ai · its alternatives →

Also compare

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 →