Best Anthropic API Alternatives with Free Tiers (2026)

25 free alternatives in AI / ML. Sorted by pricing stability.

Current Anthropic API Situation

Risk Level: caution
Why: 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.
Category: AI / ML

Recent Pricing Changes (1)

model change discovered 2026-09-02 high impact
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.

All Free Alternatives (25)

15 of these carry no recorded demerit and are indistinguishable under every signal we hold; their order rotates daily. 9 are demoted with the reason named, and 1 are listed last because they are not generally available or are not a free offer. How we rank.

Left out of this list: 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), Arize AI (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), 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), Pollinations.AI (shares no subtype with this product), ReportGPT (none of this category's subtypes apply), Zenable (none of this category's subtypes apply), Vast.ai (shares no subtype with this product), GitHub Models (we have not classified this record), 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). Each is still listed in its category, with the vendor's own words we read that from on its page. How we decide this.

Lumenfall.ai stable
Free
AI / ML Verified 2026-09-01
Mistral AI caution discovered 2026-09-03 restructured
Free
AI / ML Verified 2026-09-05
Groq stable
Free
AI / ML Verified 2026-08-15
Free
AI / ML Verified 2026-08-20
Cloudflare Workers AI caution discovered 2026-09-01 restructured
Free
AI / ML Verified 2026-08-09
Portkey stable
Free
AI / ML Verified 2026-08-12
Hugging Face stable
Free
AI / ML Verified 2026-08-09
Keywords AI stable
Free
AI / ML Verified 2026-09-02
SiliconFlow stable
Free (Limited)
AI / ML Verified 2026-08-20
OpenRouter stable
Free
AI / ML Verified 2026-08-25
Cerebras stable
Free
AI / ML Verified 2026-08-15
Ollama Cloud stable
Free
AI / ML Verified 2026-08-19
Free
AI / ML Verified 2026-07-30
Free
AI / ML Verified 2026-08-17
Free
AI / ML Verified 2026-08-15
DeepSeek API caution discovered 2026-09-03 restructured
Free Credits + Pay-as-you-go
AI / ML Verified 2026-08-18
−2 time_limited_offer Tier "Free Credits + Pay-as-you-go" is a credit grant that runs out, not an ongoing free tier.
Fireworks AI stable
Free ($1 credits)
AI / ML Verified 2026-08-25
−2 time_limited_offer Tier "Free ($1 credits)" is a credit grant that runs out, not an ongoing free tier.
Google GLM 5 stable
Experimental Preview
AI / ML Verified 2026-08-19
−2 time_limited_offer Tier "Experimental Preview" is a beta/preview/sandbox allowance that may end without notice, not an ongoing free tier.
Together AI stable
Free ($1 credits)
AI / ML Verified 2026-08-24
−2 time_limited_offer Tier "Free ($1 credits)" is a credit grant that runs out, not an ongoing free tier.
Baseten stable
Basic (Free Credits)
AI / ML Verified 2026-08-01
−2 time_limited_offer Tier "Basic (Free Credits)" is a credit grant that runs out, not an ongoing free tier.
Cohere stable
Trial Key
AI / ML Verified 2026-08-16
−2 time_limited_offer Tier "Trial Key" is a trial that expires, not an ongoing free tier.
OpenAI risky 2026-08-26 removed
Free
AI / ML Verified 2026-06-30
−3 free_tier_withdrawn Recorded free tier removal on 2026-08-26: Assistants API deprecated, full shutdown August 26, 2026. Developers must migrate to Responses API + Conversations API
Google Gemini API caution discovered 2026-09-03 restructured
Free (Reduced)
AI / ML Verified 2026-08-18
−3 free_tier_withdrawn Recorded product deprecation on 2026-06-01: Gemini 2.0 Flash and 2.0 Flash-Lite will be deprecated June 1, 2026. Developers must migrate to Gemini 2.5 Flash or 3.x Flash models. Google is consolidating the model lineup — 2.0 generation reaching end of life as 2.5 and 3.x become production-ready.
xAI caution discovered 2026-09-02 model change
Free Credits
AI / ML Verified 2026-08-14
−3 free_tier_withdrawn Recorded free tier removal on 2026-04-13: No longer in force (2026-09-05). $25/month free API credits no longer offered — Grok API paid-only No longer in force as of 2026-09-05. This record cites nothing and xAI does not publish its sign-up credit terms on a page we can read, so it cannot be retracted on evidence; it is withdrawn because the claim it makes is contradicted by our own later record. Our xAI offer, verified 2026-08-14 and re-checked 2026-09-02, reads "Sign-up gives $25 in free API credits". Recorded separately: the URL that offer cites, docs.x.ai/developers/models, contains no occurrence of "free", "credit" or "$25" in its 5,452 characters of visible text, so that claim is also uncited and needs a source of its own.
−2 time_limited_offer Tier "Free Credits" is a credit grant that runs out, not an ongoing free tier.
MiniMax stable
Pay-as-you-go
AI / ML Verified 2026-07-09
not_a_free_offer Tier "Pay-as-you-go" is usage-billed from the first request.
Recompute today's order yourself. The order above is a permutation seeded only on the UTC date and the query key — no vendor name, slug, id or offer field is an input. The algorithm is published, so anyone can reproduce this page's order without asking us.
date
2026-09-06
query_key
alternative-to:Anthropic API
seed
4687db3f228d9ed9cb1a13dc9bf5d14f1cc92d5f96943617f9bfbdf6d2309e3c
tie_count
15

Category Trends

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Frequently Asked Questions

What are the best free alternatives to Anthropic API?
The best free alternatives to Anthropic API include Lumenfall.ai (Free), Groq (Free), Portkey (Free), Hugging Face (Free), Keywords AI (Free).
Is Anthropic API's free tier still available?
Tier "Pay-as-you-go" is usage-billed from the first request. Claude API access with usage-based pricing. Fable 5.1: $10/$50 per MTok (input/output). Opus 5: $5/$25 per MTok. Sonnet 5: $2/$10 per MTok. Haiku 4.5: $1/$5 per MTok. Batch API at 50% discount. Free t...
How many free alternatives to Anthropic API exist?
There are 25 free alternatives to Anthropic API tracked on AgentDeals across the AI / ML category.
Has Anthropic API changed their pricing?
Anthropic API has 1 recorded pricing change. The most recent was 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.

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