Best offer on record: Atlas Free tier ("Free cluster", formerly M0). 5 verified findings, checked 2026-10-22.
Offers
Atlas Free tier ("Free cluster", formerly M0) high confidence
Free-forever managed cluster: $0/hour. 512 MB (0.5 GB) storage, shared vCPU/RAM, up to 100 ops/s (reads+writes combined), 500 max connections, 100 databases / 500 collections, 32 MB sort-in-memory, 50-stage aggregation pipelines, no temp-file-to-disk (allowDiskUse ignored). Egress: not billed, but capped at 10 GB in + 10 GB out per rolling 7-day window, with throttling + 1s cooldown when exceeded. Fixed 3-node replica set, no sharding, no private endpoints/VPC peering, no server-side JS, MongoDB 8.0 only (auto-upgrade, no manual version choice), deployable only in a subset of AWS/GCP/Azure regions. One Free cluster per project (more only via sales contract). Free cluster never expires; auto-paused after 30 days of zero-connection inactivity and may be deactivated under ToS; can be resumed unless pinned to an un-restorable old version. Auth limited to SCRAM, X.509, AWS IAM. Corrections to 'known so far': it is a 3-node replica set, not single-node; docs say daily-snapshot backups CAN be enabled on Free clusters (retains up to 4 snapshots) even though the pricing-page FAQ claims backups unavailable on Free.
Eligibility
Open to anyone: free Atlas account, no .edu, no age/region gating stated. No credit card or payment method is documented as required for Free clusters (official pages are silent; sign-up flow does not state a card requirement).
How to claim
Create a free account at mongodb.com/cloud/atlas/register -> create cluster choosing the Free tier -> add a database user and your IP address (or use `atlas setup` CLI). No payment step.
Expiry
Never expires. Paused after 30 days of zero-connection inactivity (resume anytime); long-idle clusters may be deactivated per ToS, so export data before long inactivity.
Gotchas
Free egress is capped (10 GB out per rolling 7 days), not unlimited; ops throttled at 100 ops/s; no continuous/hourly backups (docs: daily snapshot, 4-snapshot retention; pricing FAQ says no backups at all - contradictory sources); no private endpoints; fixed MongoDB 8.0; no log download, no Performance Advisor; one Free cluster per project; Atlas Charts on Free clusters is limited (dashboard auto-refresh every 4h, one scheduled report per project per week, since the 2 Jun 2025 pricing change).
General trial credits / free trial for new users medium confidence
No general free-trial or trial-credit offer found for ordinary new users. The official pricing page (fetched 2026-10-22) lists only: the free-forever Free tier, MongoDB for Startups credits, MongoDB for Educators ($500), and the GitHub Student Developer Pack ($50). No dollar-amount trial with a time limit is offered; the Free tier itself is the perpetual on-ramp.
Eligibility
n/a (no offer found).
How to claim
n/a - no claim path because no general trial/credit offer exists on official pages.
Expiry
n/a.
Gotchas
Don't confuse with the startup/educator/student credit programs (separate findings). Historically Atlas had promotional trials that are no longer advertised; absence verified on the current official pricing page.
Atlas credits in four tiers - Inspire (bootstrapped, 'baseline credits'), Grow (early-funded, 'expanded credits'), Innovate (VC-backed, 'additional credits'), Scale (rapidly scaling, 'maximum credits') - plus Voyage AI tokens (embedding/reranker), 1:1 expert sessions, and a Developer Support plan that is free for 30 days then $49/month (chargeable against credits). Exact credit dollar amounts are NOT published; they are disclosed in the acceptance email/promo code. Credits have a 12-month activation window from issuance, then must be used within 12 months of activation; they apply to future charges only; extensions case-by-case (contact startups@mongodb.com with >=3 months remaining; check balance/expiry at account.mongodb.com -> Billing -> Available Credits).
Eligibility
Company <7 years old; funding stage Series A or earlier (form allows up to 'Series B or higher', mapped to Scale tier); single software product/service; development shops and agencies explicitly excluded; first-time applicants only; active company website and LinkedIn profile; company email. No revenue cap stated.
How to claim
Apply via the form on mongodb.com/startups, or get referred by your VC/accelerator/incubator. On acceptance: receive unique promo code by email -> log in at account.mongodb.com -> Billing -> 'Apply Code' -> enter Activation Code (must be Organization Owner or Organization Billing Admin). If no response in 5 business days, email startups@mongodb.com.
Expiry
12 months to activate after issuance, then 12 months to use; extension possible case-by-case.
Gotchas
Amounts undisclosed until acceptance; credits do not cover retroactive usage; Developer Support costs $49/month after the free 30 days; one-time participation only; eligibility screening uses Pitchbook valuation data (Dec 2025 footnote).
MongoDB for Students (via GitHub Student Developer Pack) high confidence
$50 in MongoDB Atlas credits, free MongoDB certifications valued at $150 via MongoDB University, access to MongoDB Compass, and a student community-forum support link. Distributed through the GitHub Student Developer Pack (listed under 'Infrastructure & APIs' on education.github.com/pack).
Eligibility
Must be at least 13 years old and enrolled in a degree- or diploma-granting program with a verifiable school email or documentation (per the MongoDB pricing-page card); eligibility is verified through GitHub's student-pack process (.edu email or other proof).
How to claim
Sign in to the GitHub Student Developer Pack (github.com/education), claim the MongoDB voucher -> redeem the code in your MongoDB account to receive the $50 Atlas credit and University certification access. No credit card needed for the credit itself.
Expiry
No explicit credit-expiry stated on either official page; treat as subject to MongoDB's standard credit terms.
Gotchas
$50 is modest next to the free-forever M0 tier; certification value is a nominal $150 marketing figure; pack access requires GitHub student verification, which can fail with expired .edu accounts. The MongoDB-owned landing pages (mongodb.com/mongodb-for-students, /learn/education/students/licenses/) are 404 - the offer now lives only in the pricing page and the GitHub pack.
$500 in free MongoDB Atlas credits, free MongoDB certifications valued at $150, plus access to educator community forums and events. Announced on the official pricing page (fetched 2026-10-22) and on learn.mongodb.com/educators/ (page is JS-rendered; specifics could not be machine-read, so sub-details below are lower confidence).
Eligibility
Intended for educators (instructors/faculty teaching MongoDB or using it in courses); the exact eligibility definition (K-12 vs higher-ed, required affiliation) could not be confirmed from official text today.
How to claim
Apply through the MongoDB University educators page (learn.mongodb.com/educators/); upon approval receive the $500 Atlas credit and free certification via your MongoDB account.
Expiry
No credit-expiry dates published on the pages fetched; subject to standard credit terms.
Gotchas
Landing page is JS-rendered so limits/eligibility should be confirmed by hand before relying on them; $500 credit is for Atlas (managed), not for self-hosted server licenses.
2025-2026 changes found: (1) Feb 2025 - Atlas Flex tier ($8 base, capped ~$30/mo, 5 GB, burst up to 500 ops/s) launched and replaced the older Atlas Serverless and Shared tiers, which are gone; the Free tier was kept 'free forever'. (2) The 'M0' tier is now officially called the 'Free' cluster in docs and UI; docs pin Free clusters to MongoDB 8.0 with no manual version upgrades. (3) Idle Free clusters auto-pause after 30 days of zero-connection inactivity (a Mar 2025 community post cites a 60-day window, so the pause window was tightened to 30 days) and may be deactivated per ToS - a material change for 'free forever' expectations. (4) 2 Jun 2025 - Atlas Charts pricing change: M0 clusters got a restricted free Charts tier (dashboard auto-refresh every 4 hours, one scheduled report/project/week). (5) Legacy student/educator self-hosted license pages (e.g. learn.mongodb.com/.../students/licenses, mongodb.com/education which now 308-redirects to MongoDB University) are gone/redirected - the classic 'student license' free self-managed server offer appears sunset; student value is now delivered through the GitHub Student Developer Pack ($50 Atlas credits + $150 certifications) plus MongoDB University. (6) Backup availability on Free clusters is now documented (daily snapshot, up to 4 retained) despite the pricing-page FAQ still saying 'backups not available for the Free tier' - treat the FAQ as stale and verify in the console.