OAuth access — sign-in with your existing account. Google Antigravity 43 models tracked (via OpenRouter catalog).

A free tier is available; the exact credit value is not quantified.

Antigravity CLI (agy) — the terminal TUI for Google Antigravity 2.0, replacing Gemini CLI. Shares the same agent backend as the Antigravity IDE (incl. Claude models). Authenticates via Google OAuth. Free 'Individual' tier with weekly rate limits; higher limits via Google AI Pro/Ultra plans. No bring-your-own-key support.

Overage billed via purchased Google AI credits at Gemini Enterprise Agent Platform consumption pricing (not per-token fixed).

Api.airforce is a unified AI model aggregator reselling access to 100+ models from Anthropic, OpenAI, and xAI. It offers a large selection of free models (including Grok-3 and Claude 3.7) alongside paid subscription tiers for higher throughput.

55 free tier models including Grok-3, Claude 3.7, Qwen3, Kimi-K2, Gemini 2.5 Flash, DeepSeek-V3

Apishop is a professional AI API gateway designed for developers in mainland China. It provides direct, low-latency access to Anthropic, OpenAI, and Gemini models with zero code changes required. Billing is transparently mapped 1:1 to official USD rates but paid in local currency.

freeairouter review: register-then-pay-as-you-go commercial gateway, no public free quota seen; official site is a mainland-friendly gateway drop-in compatible with OpenAI/Anthropic/Gemini.

Arena.ai (formerly LMArena / Chatbot Arena, lmarena.ai) is a free, anonymous multi-model chat + blind A/B voting service that powers the public LLM/image/code leaderboards. It rotates a large lineup of frontier and open models. This route is an unofficial web-cookie integration (arena-auth cookie, optional Cloudflare clearance/reCAPTCHA tokens); the site also supports anonymous sessions but automated access is rate-limited and subject to bot checks.

A free tier is available; the exact credit value is not quantified.

Auggie is Augment Code's free, terminal-based agentic coding CLI (npm i -g @augmentcode/auggie) that runs context-aware agents locally with interactive and headless modes. It is multi-model (Claude, GPT, or bring-your-own-key); the broader Augment 'Cosmos' platform is the company's enterprise offering.

Free CLI tier; enterprise/Cosmos pricing not publicly quantified on the fetched pages.

new.bxacc.xyz is an anonymous Chinese New-API based relay aggregating GPT-5.x, Claude Opus 4.x, and DeepSeek V4. Probed model_price=0 entries are token-billed via model_ratios, making it a pure top-up relay with high risk.

Unknown (/api/pricing has 6 model_price=0 entries, but quota_type=0 token billing with non-zero model_ratio/completion_ratio means they are actually paid; no verifiable sign-up bonus).

Baidu ERNIE models are served through the Baidu Qianfan model service and Agent development platform on Baidu Cloud, alongside third-party models such as DeepSeek, Kimi and Qwen. From 24 October 2025, users who open Qianfan and accept the user agreement automatically receive new-user free token quota: 17 listed preset models each grant 1,000,000 tokens valid for 3 months, including ERNIE-4.5-Turbo-128K, ERNIE-4.5-Turbo-32K, ERNIE-4.5-Turbo-VL, ERNIE-X1-Turbo-32K, bge-large-en and bge-large-zh. Free quota offsets online inference of preset models only, not batch inference, and verified unit prices on the billing page include embeddings at 0.0005 CNY per thousand tokens, image generation from 0.05 CNY per image, and web search augmentation at 0.004 CNY per triggered search.

Official page states a new-user grant of 1,000,000 tokens on each of 17 preset models, valid 3 months (cloud.baidu.com Qianfan new-user free quota doc); no USD value is given and the ERNIE text-model unit-price table did not render on the official billing page, so no conversion was made (checked 2026-09-16).

Baidu Qianfan is the official Model-as-a-Service (MaaS) platform of Baidu Intelligent Cloud. It serves the ERNIE (Wenxin Yiyan) series models and other third-party models via an OpenAI-compatible v2 API, offering high-performance inference for enterprise and individual developers.

No public free-tier information found (researched 2026-08-29).

Baseten offers Model APIs, hosted open-weight models behind an OpenAI Chat Completions endpoint at inference.baseten.co with a beta Anthropic Messages endpoint, alongside dedicated GPU deployments and training billed per minute. Model API rates range from $0.10/1M input and $0.50/1M output for GPT OSS 120B to $3.00/1M input and $15.00/1M output for Kimi K3, with cached input billed at roughly a tenth of the input rate. The Basic plan is $0 per month pay-as-you-go, and the pricing FAQ states new accounts come with credits but publishes no amount.

The official pricing FAQ states that new Baseten accounts come with credits to experiment with deployments, but no dollar amount, expiry or conditions are published (checked 2026-09-16).

web-cookie access — wraps the provider web app (unofficial). Paste your __Secure-authjs.session-token value or full cookie header from app.blackbox.ai This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

A free tier is available; the exact credit value is not quantified.

Open-source Go proxy server (MIT license, router-for-me/CLIProxyAPI) that wraps CLI subscriptions - Google Antigravity/Gemini, OpenAI ChatGPT Codex (GPT series), Anthropic Claude Code, xAI Grok Build, Moonshot Kimi - and exposes them as OpenAI (incl. Responses), Gemini (incl. Interactions), Claude, Codex and Grok compatible API endpoints. OAuth login flows, multi-account round-robin load balancing, streaming/non-streaming/WebSocket, function calling, multimodal input, Management API, and an embeddable Go SDK. Self-hosted; users bring their own upstream accounts/keys. Desktop wrapper: EasyCLIProxyAPI.

Software is free (MIT); access to upstream models depends on user-provided subscriptions/API keys, no credits or prices from the proxy itself.

Provider slug 'api-celebras-ai' appears to be a typographical error of 'api-cerebras-ai'. No distinct AI service or official documentation was found for this specific domain (celebras.ai). Research suggests 'Celebros' exists as an e-commerce search tool, but it is unrelated to LLM inference.

celebras.ai does not resolve (DNS fail) - apparent typo of Cerebras, api.cerebras.ai. Cerebras pricing page lists a Free tier; docs have a Free Trial tier (not auto-renewing); trackers report ~1M tokens/day, 5 RPM free.

Hyper (by Charm) is an AI inference solution purpose-built for coding. It manages its own infrastructure to optimize open-source coding models. It provides 100 free Hypercredits monthly on signup. Details were checked against the provider's own page at hyper.charm.land.

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

web-cookie access — wraps the provider web app (unofficial). Paste the full ChatGPT Cookie header. OmniRoute verifies it in an isolated headless browser profile. 93 models tracked (via OpenRouter catalog).

A free tier is available; the exact credit value is not quantified.

ChatGPT's free tier is available to everyone and is described on the official pricing page as unlimited text chats with GPT-5.6 Luna subject to abuse guardrails, with limited messages when uploading files, limited and slower image generation, limited voice chats, limited deep research, limited memory and context, limited Codex access and limited ChatGPT Work access on desktop. Paid plans are priced per user per month at $8 (Go), $20 (Plus) and $200 (Pro) as announced by OpenAI on 16 January 2026, with Business and Enterprise offered monthly or annually.

No free credit or USD allowance is stated for ChatGPT on the official pricing page or the ChatGPT Go announcement (checked 2026-09-16); the free tier is a feature-limited plan, not a credit.

Chipotle 'Pepper' is the free, anonymous customer-support chatbot on amelia.chipotle.com, powered by IPsoft Amelia. It requires no login (anonymous sessions) and answers only Chipotle-related questions; off-topic prompts are refused.

Free anonymous support chatbot; no credit system.

Chutes is a decentralized serverless AI inference marketplace on Bittensor (Subnet 64). It provides an OpenAI-compatible API for deploying and scaling open-source models using high-performance VLLM templates, with per-token pricing and optional monthly subscription plans.

Official announcement 2026-02-27: $5-deposit 200-requests/day plan closed to new users, fully retires 2026-03-15; now pay-per-token (or GPU by the second). Bittensor-subsidized cheap models are not a free tier.

Clarifai provides a production-ready AI API for developers, offering an OpenAI-compatible endpoint to run inferences on Clarifai-hosted models from labs like Meta, Google, and Mistral, alongside their own specialized vision and NLP models.

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

OAuth access — sign-in with your existing account. Claude Code (Anthropic) 27 models tracked (via OpenRouter catalog).

A free tier is available; the exact credit value is not quantified.

Claude's consumer app is sold on a plan matrix published at anthropic.com/pricing. The Free column includes chat on web, iOS, Android and desktop, Sonnet and Haiku model access, a 200k-token context window, web search, artifacts, memory, skills, connectors, voice mode, incognito chats and file creation and editing through code execution, while Opus, Fable, Claude Code, Projects, Research, Claude in Chrome and the Microsoft 365 and Outlook integrations are all marked as not included. Anthropic states only that usage limits apply and does not publish a numeric message or token cap for the Free plan.

No free tier stated on official pages (checked 2026-09-16) as a credit: the consumer Free plan is a listed plan tier but no allowance or numeric cap is published, and the API docs state only that new API users receive a small amount of free credits without quantifying them.

OAuth access — sign-in with your existing account. Cline (open-source coding agent) This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

A free tier is available; the exact credit value is not quantified.

ClinePass — Cline's flat $9.99/month subscription giving 2-5x the usage (vs standard API rates) on a curated set of open-weight coding models from Z.ai, Moonshot AI, DeepSeek, MiniMax, MiMo, and Qwen. No separate provider accounts or API keys needed; usable with other agents via the ClinePass API key. Separate from Cline's pay-as-you-go provider.

Flat monthly quota (2-5x API rate); not a per-token credit system.

CoderPlan is a commercial AI API relay focused on developer tools like Claude Code and Gemini CLI. It provides pay-as-you-go top-up tiers for Chinese developers, claiming to match official API pricing for models like Claude and GPT.

Small signup 'trial credit' whose amount is unstated — not quantified; no sustained free tier. Core is four paid top-up tiers $30/$100(+$5)/$300(+$20)/$500(+$50) with non-expiring credit.