Nscale is a European AI hyperscaler providing Serverless Inference for large-scale AI deployment. It offers an OpenAI-compatible API to leading open models like Llama and DeepSeek. New users receive a $5 signup credit to start prototyping without initial cost.

New users get a one-time $5 free credit to explore the models; after that you add a card to buy more. The core is pay-as-you-go (e.g. GPT-OSS 120B ~$0.1 in / $0.4 out per 1M tokens), with no rate limits and no cold starts.

BluesMinds is a primarily-paid AI relay reselling access to Claude and GPT at significant discounts. It offers a large free credit bonus ($500) for accounts linked to aged GitHub profiles, and provides free daily calls for specialized models like GPT-4.1.

Up to ~$500 in credits for aged GitHub accounts per community reports.

Google Cloud's enterprise-grade AI platform (Vertex AI) providing managed access to Gemini models and third-party models like Llama and Mistral. Offers advanced features like grounding with Google Search, model tuning, and provisioned throughput for predictable performance.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Agent Router is an open-source, public-welfare AI API aggregation platform designed to unify access to agents and MCP tools. It is 'forever free' for both users and developers, providing a discovery registry for skills (ClawHub) and a live A2A directory.

Offers $100-$200 free credit bonus for new accounts to bootstrap agent usage.

Amazon Bedrock is a fully managed service that offers a choice of high-performing foundation models from leading AI companies like Anthropic, Meta, and Mistral via a single API. It is primarily pay-as-you-go with various service tiers (Standard, Flex, Priority).

Bedrock itself has no permanent free tier and bills per use from the first call; new AWS accounts opened after 2025-07-15 receive $200 in credits (expire in 6 months) usable across services including Bedrock.

Deepgram is a speech AI API provider (STT Nova-3/Flux/Whisper-Cloud, TTS Aura-2/Aura-1/Flux, voice agents, audio intelligence). Free $200 credit (no card, no expiration), then pay-as-you-go; Growth/Scale annual plans from $4K+/year.

Published free credit of $200 USD (no minimums, no expiration, no credit card required) — direct 1:1 credit value.

Mistral AI's official platform (La Plateforme) provides access to their open and proprietary models via an OpenAI-compatible API. It features a free 'Experiment' tier for developers and pay-as-you-go pricing for production workloads.

Community reported approximate monthly value of the Experiment free tier for developers.

token.sensenova.cn is the official Token Plan for SenseTime's SenseNova multimodal AI platform. During its public beta, it offers generous free quotas for models like SenseNova 6.8 Flash Lite and U1 Fast, suitable for complex office workflows.

Free public beta (extended to end of July): 1,500 calls/5h per model (verified: 60k points/5h on token-plan page); ~7,200 calls/day ~ $200/mo equivalent at ~1K tokens/call. Phone signup, up to 20 API keys.

LongCat is Meituan's large model API platform (longcat.chat/platform), offering OpenAI/Anthropic-compatible endpoints. During its public beta phase in 2026, it provides generous daily free token allowances for models including LongCat-Flash and LongCat-2.0, with a context window of 131K tokens.

Free during public beta: initial ~5M tokens/day (per API changelog), activity can raise it up to ~120M/day; ~$150/mo equivalent at blended $1/1M tokens. Phone signup, key in ~3 min; paid top-ups not yet supported.

The xAI Console is the official developer interface for Elon Musk's Grok models. It offers a usage-based API with prepaid credits, prioritizing performance and direct access to their flagship large language models.

Community reported trial credit amount for new developer accounts.

Speechmatics is a speech-to-text API (real-time WebSocket and async batch) with NLP insights (summaries, intents, sentiment). Self-serve Free and Pro plans: new sign-ups get a $100 credit grant (1 credit = $1) with no card required; Pro adds pay-as-you-go billing with volume discounts above 500 hours/month; Enterprise is contract-based with on-prem/on-device deployment. Rates start around $0.129/hr (2026 pricing page snippet); legacy free tier was 8 hours/month.

Official docs: new sign-ups receive a $100 credit grant at no cost (1 credit = $1 USD), usable on Free at no charge and drawn down first on Pro — direct 1:1 credit value. (Pre-Accounts before 2026-08-01 receive an additional one-time $25 transition credit.)

You.com Search API: real-time LLM-ready web + news search (you-search), plus Contents, Research, Answer, and Finance Research APIs. Free keyless MCP access at 100 queries/day; new API accounts start with $100 in complimentary credits (no card); per-usage credit billing for higher tiers.

$100 in complimentary credits granted to new API accounts at you.com/platform, no credit card required (one-time).

Hajimi API (api.gemai.cc) is a Chinese third-party relay aggregation platform. It specializes in routing requests to Claude, Gemini, and GPT models through a unified OpenAI-compatible endpoint, primarily catering to users requiring simplified access to international models.

New users get 100 units of balance by default (community figure ~¥500 (≈$74.39)), QQ-email signup only; there is a daily check-in farming crowd; 'limited perk' zero-priced models can be delisted anytime.

ModelScope (modelscope.cn), backed by Alibaba Cloud, is an open-source model community and inference platform. It provides a free API tier allowing users to make up to 2,000 OpenAI-compatible calls per day across a wide range of open-source models (Qwen, DeepSeek, GLM).

2,000 API-Inference calls/day per user (verified, aggregated across models; ~200-500/day per model), resets UTC+8 00:00, 429 when exceeded; requires Alibaba Cloud binding. ~$60/mo equivalent at ~1K tokens/call.

Gladia is a speech-to-text API for real-time streaming and async transcription in 100+ languages with speaker diarization, word-level timestamps, and automatic language detection. Prepaid credit wallet: Starter $0.61/hr async, $0.75/hr real-time; Growth from $0.20/hr async and $0.25/hr real-time (volume-committed); Enterprise custom. New accounts get 50€ in one-time free credits.

50€ one-time free credit grant (no monthly reset); ≈ $54 at ~1.08 EUR/USD. Per Gladia FAQ, roughly 80+ hours of async or 60+ hours of real-time transcription at current rates.

AnyRouter (anyrouter.top) is a public-welfare AI API relay primarily serving the mainland Chinese developer community. It specializes in routing Claude Code and other frontier models for free, supported by community sign-in bonuses and referral credits.

Grants ~$50-$100 in free credits on sign-up based on community reports.

Context7 (Upstash): library/developer-docs search API — find up-to-date documentation snippets for libraries, frameworks, and codebases. API key optional: anonymous access has low shared rate limits; free API key (ctx7sk) at context7.com/dashboard raises limits. Not a general web search.

Free tier exists (anon + free API key) but Context7 publishes no public per-query price, so value cannot be quantified honestly.

Groq Cloud provides ultra-fast LLM inference using its proprietary LPU (Language Processing Unit) hardware. It offers an OpenAI-compatible API with a substantial free tier for developers to test and build applications at scale.

Community reported approximate monthly value of free tier rate limits for individual developers.

Pioneer AI, by Fastino Labs, provides an inference API for specialized tasks like data extraction and classification. It offers seat-based subscriptions with included platform credits and priority support.

$75 free usage credits — no credit card required

AeroLink (aerolink.lat) is a commercial AI API gateway and relay service that routes multiple coding assistants and automation tools through a single key. It offers tiered subscription plans with rolling usage windows and claims access to high-end models like Claude Opus 4.8.

Starter plan offers a 1-week free trial included in the promo.

Baseten is a robust model inference and deployment platform that enables enterprises to run custom and open-weights models in production. It offers high scalability, dedicated GPU infrastructure, and a developer-friendly API for deploying models from a comprehensive library.

New workspaces get $30 in trial credits billed by compute time (confirmed by pricing FAQ and 2026 credit trackers); converts to pay-as-you-go once spent. Startup program (up to $25K) is separate.

Cerebras Inference is powered by wafer-scale WSE chips, offering world-leading inference speeds. It provides an OpenAI-compatible API with $5 in free credits and generous rate limits for developers. Details were checked against the provider's own page at www.cerebras.ai.

Free dev tier: 1M tokens/day (daily reset, no card, ~30 RPM / 60K TPM; some report 5 RPM) → ≈$30/mo blended at $1/1M; beyond that paid PAYG (developer tier from $10).

Cerebras Inference offers ultra-fast AI inference powered by its Wafer-Scale Engine (WSE-3) technology, achieving record-breaking speeds up to 3000 tokens/s. The official API is OpenAI-compatible and features a generous free tier alongside professional pay-as-you-go access.

Free tier ≈1M tokens/day (resets UTC 00:00, no card, no waitlist) → ≈$30/mo blended at $1/1M; 8K context cap; RPM reported 5–30 by different sources. Paid dev tier from $10.

Exa: neural web search API for AI agents — keyword + semantic search over a 70B+ document index, plus Deep Search, Contents, and Agent products. 10 QPS free, 25 QPS pay-as-you-go; SOC 2 Type II; ~$120 total credits per year free (20 at signup + 10/month).

Free tier is $20 one-time + $10/month credits (>$120/yr total) — recurring monthly value is $10 but free credits exceed the $10 search budget at $7/1k requests, so not expressed as a single clean USD figure.