Anthropic API pricing details and 27 free alternatives in AI / ML. Catalogue date August 2026.
not_a_free_offer Tier "Pay-as-you-go" is usage-billed from the first request. How we use this.
A verdict here is not a fixed property of the vendor. A one-off pricing event demotes a vendor while its recorded date falls in the last 180 days and then lapses on its own, with nothing about the vendor having changed; a standing condition — a free tier withdrawn and not restored, a product retired — does not lapse with time. This one rests on a record discovered 2026-09-02 · effective date unknown, so it lapses on 2027-03-02 unless we record something new first.
Subtypes in AI / ML: llm_api — the vendor runs language or multimodal models on its own infrastructure and sells calls to them by model name; you send a prompt and receive a completion. We read that on 2026-09-01 from https://docs.anthropic.com/en/docs/about-claude/models, where it says: “Claude is a family of state-of-the-art large language models” How we use this.
Tier "Pay-as-you-go" is usage-billed from the first request. Claude API with usage-based pricing per million tokens (input/output). Claude Fable 5.2 $8/$40… Anthropic API warrants caution — discovered 2026-09-02: Anthropic API's own page now redirects to platform.claude.com, and the lineup behind it advanced. Claude Fable 5.1 is $10/$50 per MTok, Opus 5 is $5/$25, Sonnet 5 is $2/$10 and Haiku 4.5 is $1/$5. Anthropic also states that Sonnet 5's $2/$10 introductory pricing is now the standard price and the rise to $3/$15 scheduled for September 1, 2026 will not occur. Source: https://docs.anthropic.com/en/docs/about-claude/models Monitor for further changes.
Claude API with usage-based pricing per million tokens (input/output). Claude Fable 5.2 $8/$40. Claude Fable 5.1 $10/$50. Claude Opus 5.5 $4/$20. Claude Sonnet 5.5 $2/$10. Claude Sonnet 5 $2/$10. Claude Haiku 5.5 $0.10/$0.50 (for prompts up to 100,000 tokens; longer prompts cost five times as much). Claude Haiku 4.5 $1/$5. Anthropic released Claude Fable 5.2 and Claude Mythos 5.2 on November 9, 2026. Claude Mythos 5.2 has the same prices as Claude Fable 5.2 and is offered only to organizations verified through Anthropic's verification programs. The Batch API gives a 50% discount on input and output tokens. Claude Fable 5.2 and Claude Mythos 5.2 fast mode cost $16 per million input tokens and $80 per million output tokens. Claude Opus 5.5 fast mode costs $8 per million input tokens and $40 per million output tokens. Fast mode is not available with the Batch API. Claude Fable 5.2, Claude Mythos 5.2 and Claude Opus 5.5 cache hits $0.20, Claude Sonnet 5.5 cache hits $0.10, Claude Fable 5.1 and Claude Mythos 5.1 cache hits $0.25. Other models’ cache hits cost 0.1x the input price. Cache writes cost 1.25x the input price for 5-minute lifetime and 2x for 1-hour lifetime. Anthropic states "Claude Max, Ultra, and Team plans include monthly credits for the Claude API." Max gets $100 a month, Ultra gets $200, and Team gets $20 per Standard seat and $100 per Premium seat, pooled up to $500. Anthropic's pages state no free credit amount for new API users.
We read that on 2026-11-11 from https://platform.claude.com/docs/en/about-claude/pricing, and our check recorded: the page names Anthropic API as "anthropic" and states "$8" and "$40" and "$10" and "$16". A source check reads the cited page for the service's name and a price; the limits above are from our own record.
How Anthropic API compares against every one of the 27 we list, not against a selection of them. A surface with room for every member of a tied set may rotate their order. A surface with room for only some of them names none of them, because which ones it named would be the claim, and a claim seeded on the date is not the one we serve tomorrow. How we decide this.
| Service | Free Tier | Stability |
|---|---|---|
| Anthropic API | Pay-as-you-go | not_a_free_offer |
| Maxim AI | Free Simulate, evaluate, and observe your AI agents — The 'OSS' tier is free forever for developers, small teams, and self-managed deployments. It includes features like a drop-in replacement, OTel compatibility, metrics & traces, built-in observability, budget management, and more. |
stable |
| Lumenfall.ai | Free AI media gateway: one OpenAI-compatible API to image and video generation models from several providers, billed at each provider's price with no markup, platform fee or subscription. One model, FLUX.1 [schnell] FP8, is listed free per image ("Free to try", served through Fireworks AI). |
stable |
| Pollinations.AI | Free Keyless Classic API: one image model and GPT-OSS 20B text, free, no sign-up, rate-limited per IP. Every other model needs an API key and Pollen, and free Pollen comes only from quests. |
caution |
| OpenRouter | Free AI model router. Free plan: 50 requests a day, no BYOK. |
stable |
| LLM7.io | Free LLM inference gateway. With a free token from dash.llm7.io: 1 request a second, 60 a minute, 250 an hour and 100,000 tokens per 24 hours, counting input and output tokens; LLM7 says free quotas may be reduced without notice. |
caution |
| Cloudflare Workers AI | Free Workers AI runs AI models on Cloudflare's global network. Every account gets 10,000 Neurons per day at no charge, reset daily at 00:00 UTC; on the Workers Free plan, requests beyond that fail until the reset. |
caution |
| NVIDIA NIM | Free Free inference endpoints on build.nvidia.com: models marked Free Endpoint, including DeepSeek V4.1 Flash, GLM 5.3 Flash, gpt-oss-20b, Gemma 4 31B and NVIDIA Nemotron 3 Ultra, can be called at no cost. Their model IDs are deepseek-ai/deepseek-v4.1-flash, z-ai/glm-5.3-flash, openai/gpt-oss-20b,… |
stable |
| Cohere | Free AI model API for Command chat models, Embed, Rerank, Transcribe and Parse. Every account starts with a Trial API key: calls made with it are free and limited to 1,000 API calls a month. |
stable |
| Hugging Face | Free ML model hub. Since 2026-10-07, free accounts get no included Inference Providers credits: free users buy credits or upgrade to PRO to call Inference Providers, which serves 200+ models. |
caution |
| Keywords AI | Free Rebranded to Respan; keywordsai.co redirects to respan.ai. Free plan: full platform, 100k logs, 1k scores, 5 datasets, 2 evaluators, 5 prompts. |
source unconfirmed |
| Groq | Free Fast LLM inference on Groq's LPU hardware. Free plan: gpt-oss-20b, gpt-oss-120b and Qwen3.8 27B, each at 30 requests a minute, 1,000 requests and 200,000 tokens a day, plus Whisper speech-to-text at 2,000 requests a day. |
caution |
| Google Gemini API | Free (Reduced) Free tier: Gemini 4 Hydrogen, Gemini 3.8 Flash, 3.6 Flash, 3.5 Flash-Lite, 3.1 Flash-Lite, Gemini 3 Flash Preview, Gemini Embedding 2 and Gemma 4 are free of charge. Also free of charge are Gemini 3.8 Live (real-time voice), Gemini 3.5 Live Translate (translation), Gemini 3.5 Transcribe… |
stable |
| Hetzner Inference API | Free Hetzner's experimental Inference API: an OpenAI-compatible API for open-weight models, free while it stays experimental. Base URL: https://inference.hetzner.com/api/v1. |
stable |
| Zhipu AI | Free China-based GLM model API. The price list marks these models free: GLM-4.7-Flash, GLM-4-Flash-250414 and GLM-Z1-Flash (text); GLM-4.6V-Flash, GLM-4V-Flash and GLM-4.1V-Thinking-Flash (vision); CogView-3-Flash (image); CogVideoX-Flash (video). |
source unconfirmed |
| Portkey | Free Control panel for Gen AI apps featuring an observability suite & an AI gateway. Send & log up to 10,000 requests for free every month. |
unrated |
| SiliconFlow | Free Pay-as-you-go model inference. siliconflow.cn, run by a Beijing company, lists these models at no charge: the chat models Qwen3-8B, Qwen2.5-7B-Instruct (Free), Qwen3.5-4B, GLM-4-9B-0414, GLM-Z1-9B-0414, DeepSeek-R1-0528-Qwen3-8B (Free) and Xing4.0-29B; the translation model Hunyuan-MT-7B; the OCR… |
unrated |
| Fireworks AI | Free Credits Inference platform for open models, with serverless per-token pricing and on-demand GPU deployments billed per GPU second. Fireworks offers $1 in free credits to get started. |
unrated |
| Baseten | Basic (Free Credits) ML model deployment platform. New workspaces receive credits for testing and deployment; Baseten does not state the amount. |
unrated |
| Cerebras | Trial Ultra-fast LLM inference API — no permanent free tier. New accounts get $5 in free credits after adding a verified payment method, expiring 30 days after they are granted. |
risky |
| GitHub Models | Retired GitHub retired GitHub Models on 2026-07-30, so there is no free tier. GitHub's own documentation states "GitHub Models has been retired." |
source unconfirmed |
| Together AI | Pay-as-you-go Inference API for open-source models, billed per token. Together AI does not currently offer free trials; access requires a minimum $15 credit purchase for an organization's first purchase ($5 for later purchases), and the platform is fully prepaid. |
unrated |
| xAI | Pay-as-you-go Grok API, pay as you go: sign up at console.x.ai, then load it with credits. grok-4.7 $2.00/$6.00 (per 1M tokens, under 200k prompt tokens). |
unrated |
| DeepSeek API | Pay-as-you-go Pay-as-you-go LLM API with no free tier, billed from a prepaid balance. DeepSeek-V4.1-Flash (deepseek-flash): $0.30/M input, $1.20/M output at peak. |
unrated |
| OpenAI | Pay-as-you-go AI API platform. One model is priced Free in OpenAI's own table: the moderation model omni-moderation-latest. |
unrated |
| Mistral AI | Pay-as-you-go Since about 2026-11-05, Mistral's Free plan covers Vibe and Studio and does not include API access. Creating API keys and calling the API require billing activation and pay-as-you-go with prepaid credits. |
unrated |
| Ollama Cloud | Pay-as-you-go Cloud-hosted Ollama for running open-source LLMs. Between October 26 and 27, 2026, Ollama replaced its Free plan, which included starter usage credits, with a $0 Pay as you go plan. |
unrated |
| MiniMax | Pay-as-you-go MiniMax sells API access pay-as-you-go on platform.minimax.io. Its pricing pages list no free API allowance; one docs page mentions a free quota for new pay-as-you-go users but gives no amount. |
unrated |
Left out of this list: Brave Search API (shares no subtype with this product), Pinecone (shares no subtype with this product), Qdrant (shares no subtype with this product), Deepgram (shares no subtype with this product), Kaggle (shares no subtype with this product), Roboflow (shares no subtype with this product), Scale AI (shares no subtype with this product), AssemblyAI (shares no subtype with this product), Replicate (shares no subtype with this product), Weights & Biases (shares no subtype with this product), Comet ML (shares no subtype with this product), Clarifai (we have not classified this record), Neptune.ai (we have not classified this record), Labelbox (shares no subtype with this product), Google Colab (shares no subtype with this product), Composio (shares no subtype with this product), DeepAR (none of this category's subtypes apply), OCR.Space (shares no subtype with this product), Parseur (shares no subtype with this product), Reducto (shares no subtype with this product), SerpApi (shares no subtype with this product), Tavily AI (shares no subtype with this product), paperspace (shares no subtype with this product), Arize AX (shares no subtype with this product), Audio Enhancer (none of this category's subtypes apply), Braintrust (shares no subtype with this product), Clair (none of this category's subtypes apply), Langfuse (shares no subtype with this product), LangSmith (shares no subtype with this product), Langtrace (we have not classified this record), LangWatch (shares no subtype with this product), Mediaworkbench.ai (none of this category's subtypes apply), Othor AI (none of this category's subtypes apply), ReportGPT (none of this category's subtypes apply), Zenable (none of this category's subtypes apply), Exa (shares no subtype with this product), GPU-Bridge (we have not classified this record), Google Vertex AI Agent Engine (we have not classified this record), Google Vector Search 2.0 (shares no subtype with this product), Google Gemini Embedding 2 (shares no subtype with this product), Alibaba Cloud Qwen Code (none of this category's subtypes apply), E2B (shares no subtype with this product), Modal (shares no subtype with this product), ElevenLabs (we have not classified this record), Stability AI (we have not classified this record), Daytona (shares no subtype with this product), Blaxel (shares no subtype with this product), Novita Sandbox (shares no subtype with this product), Runloop (shares no subtype with this product), Mem0 (shares no subtype with this product), Zep (shares no subtype with this product), Letta (we have not classified this record), Supermemory (shares no subtype with this product), Cognee (shares no subtype with this product), Serper (shares no subtype with this product), Linkup (shares no subtype with this product), Parallel (shares no subtype with this product), Jina AI (shares no subtype with this product), You.com (shares no subtype with this product), Cloudflare AI Search (we have not classified this record), Valyu (shares no subtype with this product). Each is still listed in AI / ML, with the vendor's own words we read that from on its page. How we decide this.
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