awesome-free-ai-coding

Inception Labs (Mercury)

🎁 Trials (no card when possible) · no card · live — last verified by a probe on 2026-09-17 · platform.inceptionlabs.ai · back to the whole list

What you get

A signup grant on the Mercury diffusion models — Mercury 2.5 and Mercury 2 for chat, Mercury Edit 2 for fill-in-the-middle and code edits; the last is the reason this row is here, since an FIM endpoint is what an IDE completion plugin actually calls

Free models

mercury-2.5, mercury-2, mercury-edit-2

Limits, in the vendor’s words

100 million tokens on every new account, no payment details required, and the grant does not refill. The FAQ calls it a one-time credit “shared across all models rather than granted per model”, so Mercury 2.5 spends the same balance as Mercury 2. Past it the account moves to pay-as-you-go: $0.25 per 1M input and $0.75 per 1M output on Mercury 2 and Mercury Edit 2, a list $0.20/$0.75 on Mercury 2.5 that the launch promotion is discounting 80% to $0.04/$0.15 (2026-09-10). The Free tier’s own ceiling is per minute rather than per month — 1,000 requests, 1,000,000 input tokens and 100,000 output tokens

Connect

Base URL: https://api.inceptionlabs.ai/v1
Key: INCEPTION_LABS_API_KEY — get one at https://platform.inceptionlabs.ai
Callable ids: mercury-2.5, mercury-2, mercury-edit-2
Note: mercury-2.5 and mercury-2 answer /v1/chat/completions and are the two ids /v1/models lists; mercury-edit-2 answers /v1/fim/completions and /v1/edit/completions instead and is absent from that catalog by design, so an OpenAI-shaped chat client cannot call it — point an autocomplete plugin at it, not a chat agent

Evidence

Probe: the page at https://docs.inceptionlabs.ai/get-started, anchored on 100 million free tokens, no payment details required
Source: https://docs.inceptionlabs.ai/get-started
Source: https://docs.inceptionlabs.ai/resources/faq
Source: https://docs.inceptionlabs.ai/get-started/models
Source: https://docs.inceptionlabs.ai/get-started/rate-limits

History

2026-09-12 — Free models changed: added mercury-2.5
2026-08-17 — Added to the list: A signup grant on the Mercury diffusion models, one for chat and one built for fill-in-the-middle and code edits — the second is the reason this row is here, since an FIM endpoint is what an IDE completion plugin actually calls

Generated from registry.yaml on 2026-09-18 and re-verified twice a week; the full list, the Atom feed and the machinery are at https://github.com/mvalentsev/awesome-free-ai-coding.

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