# Faiss vs Upstash

**Leader by vioscaleAI score:** Upstash

| Attribute | Faiss | Upstash |
|---|---|---|
| **vioscaleAI score** | 55.5 (36% (low)) | 73.5 (73% (medium)) |
| activity.commits_last_30d | 40 | - |
| adoption.dependent_repos | 5,592 | - |
| adoption.github_stars | 40,891 | - |
| content.faq | `[{"answer":"Faiss is a library for efficient similarity search and clustering of dense vectors. It contains algorithms that search in sets of vectors of any size, up to ones that possibly do not fit in RAM. It is indexed under Vector Databases.","source":"https://faiss.ai","question":"What is Faiss?","confidence":0.6},{"answer":"Faiss is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://faiss.ai","question":"Is Faiss free to use?","confidence":0.6},{"answer":"Faiss supports Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://faiss.ai","question":"What platforms does Faiss support?","confidence":0.6},{"answer":"Yes. Faiss can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://faiss.ai","question":"Can Faiss be self-hosted?","confidence":0.6},{"answer":"Yes. Faiss is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/facebookresearch/faiss","question":"Is Faiss open source?","confidence":0.95}]` | `[{"answer":"A cloud platform offering serverless Redis, vector databases, message queues, and workflow orchestration designed for developers building serverless applications, with usage-based and fixed-rate pricing options. It is indexed under Key-Value Stores.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"What is Upstash?","confidence":0.6},{"answer":"Upstash offers a free tier, so you can start without paying. Paid plans start at $10 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"Is Upstash free?","confidence":0.6},{"answer":"Upstash supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"What platforms does Upstash support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Upstash, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"Can Upstash be self-hosted?","confidence":0.6},{"answer":"We have confirmed 11 integrations for Upstash, including Cloudflare Workers, Auth0, MongoDB, MySQL, PostgreSQL, Debezium, JDBC and FluentBit, plus 3 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"What does Upstash integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Upstash. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Upstash not holding them. Always confirm compliance directly before you rely on it.","source":"https://upstash.com/blog/redis-new-pricing","question":"What security certifications does Upstash have?","confidence":0.6},{"answer":"Upstash is available worldwide. Its primary market is the United States.","source":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","question":"Where is Upstash available?","confidence":0.5}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | Faiss is a library for efficient similarity search and clustering of dense vectors. It contains algorithms that search in sets of vectors of any size, up to ones that possibly do not fit in RAM. | A cloud platform offering serverless Redis, vector databases, message queues, and workflow orchestration designed for developers building serverless applications, with usage-based and fixed-rate pricing options. |
| features.capabilities | `{"ann_index":"HNSW, IVF, PQ, multi-index, NSG","deployment":"self_hosted","serverless":false,"quantization":"product","storage_tier":"disk_backed","licence_class":"permissive_oss","product_class":"extension","distance_metrics":"Euclidean (L2), inner product, L1, Linf","horizontal_scale":"single_node"}` | `{"ann_index":"HNSW","clustering":"replicated","deployment":"managed","serverless":true,"consistency":"strong","persistence":"durable","eviction_ttl":true,"storage_tier":"persistent","transactions":"multi_exec","hybrid_search":true,"licence_class":"proprietary","multi_tenancy":true,"product_class":"dedicated_dbms","wire_protocol":"resp","full_text_bm25":true,"multi_threaded":false,"pubsub_streams":true,"data_structures":"rich_types","distance_metrics":"cosine","horizontal_scale":"sharded_distributed","redis_api_compat":"full","metadata_filtering":"pre_filter"}` |
| integrations.count | - | 7 |
| integrations.list | - | `[{"name":"Cloudflare Workers"},{"name":"Auth0"},{"name":"MongoDB"},{"name":"MySQL"},{"name":"PostgreSQL"},{"name":"Debezium"},{"name":"JDBC"},{"name":"FluentBit"},{"name":"Drizzle","native":true,"category":"orm","direction":"bidirectional"},{"name":"Vercel AI SDK","native":false,"category":"ai","direction":"bidirectional"},{"name":"Redis protocol clients","native":true,"direction":"bidirectional"}]` |
| language.primary | C++ | - |
| license.spdx | MIT | - |
| market.availability | - | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true,"linux":true,"windows":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://faiss.ai","retrievedAt":"2026-08-13T20:46:34.341Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Pay-as-you-go","summary":"$0.20 per 100K commands plus $0.25/GB storage (1 GB free)","features":["1 GB free storage","Per-request pricing","No minimum charge"],"commitment":"monthly","components":[{"per":{"qty":100000,"unit":"commands"},"kind":"metered","amount":0.2,"currency":"USD"},{"per":{"qty":1,"unit":"GB"},"kind":"metered","amount":0.25,"currency":"USD"}],"description":"Usage-based billing without long-term commitment","contactSales":false,"includedLimits":{"storage":"1 GB free"}},{"free":false,"name":"Fixed plan","summary":"$10 to $1,500 per month depending on storage and throughput requirements","features":["Guaranteed capacity","No per-request overage charges","Flexible cancellation"],"commitment":"monthly","components":[{"kind":"fixed","amount":10,"period":"month","currency":"USD"},{"kind":"fixed","amount":1500,"period":"month","currency":"USD"}],"description":"Flat monthly rate with predictable costs and guaranteed capacity","contactSales":false},{"free":false,"name":"Enterprise","summary":"Custom pricing for 100K+ commands per second and above","features":["Custom capacity and SLAs","Dedicated support"],"description":"Custom solutions for high-volume production workloads","contactSales":true,"includedLimits":{"commands":"100K+ per second"}}],"summary":"Free tier available. Pay-as-you-go from $0 (1 GB storage free), or fixed plans $10–$1,500/month","currency":"USD","freeTier":true,"sourceUrl":"https://upstash.com/blog/aws-elasticache-pricing-explained-2026-full-cost-breakdown","retrievedAt":"2026-09-08T17:37:50.363Z","startingPrice":{"amount":10,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | - | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | low |
| pricing.starting_price | - | `{"amount":10,"currency":"USD"}` |
| pricing.transparent | - | yes |
| release.cadence_days | 83 | - |
| release.history | `[{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.15.0","date":"2026-08-03T17:10:58Z","type":"stable","version":"v1.15.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.14.3","date":"2026-06-13T04:03:53Z","type":"stable","version":"v1.14.3"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.14.2","date":"2026-05-22T20:05:00Z","type":"stable","version":"v1.14.2"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.14.1","date":"2026-03-06T17:49:04Z","type":"stable","version":"v1.14.1"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.14.0","date":"2026-03-03T03:19:33Z","type":"stable","version":"v1.14.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.13.2","date":"2025-12-19T23:41:59Z","type":"stable","version":"v1.13.2"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.13.1","date":"2025-12-03T00:02:15Z","type":"stable","version":"v1.13.1"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.13.0","date":"2025-11-12T17:18:44Z","type":"stable","version":"v1.13.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.12.0","date":"2025-08-12T16:46:55Z","type":"stable","version":"v1.12.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.11.0","date":"2025-04-25T14:13:55Z","type":"stable","version":"v1.11.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.10.0","date":"2025-01-31T23:29:10Z","type":"stable","version":"v1.10.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.9.0","date":"2024-10-04T21:33:29Z","type":"stable","version":"v1.9.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.8.0","date":"2024-03-01T01:04:25Z","type":"stable","version":"v1.8.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.7.4","date":"2023-04-20T13:45:29Z","type":"stable","version":"v1.7.4"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.7.3","date":"2022-11-30T15:24:12Z","type":"stable","version":"v1.7.3"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.7.2","date":"2022-01-10T12:19:49Z","type":"stable","version":"v1.7.2"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.7.1","date":"2021-05-28T09:08:34Z","type":"stable","version":"v1.7.1"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.7.0","date":"2021-02-13T14:11:25Z","type":"stable","version":"v1.7.0"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.6.5","date":"2020-12-21T05:24:03Z","type":"stable","version":"v1.6.5"},{"url":"https://github.com/facebookresearch/faiss/releases/tag/v1.6.4","date":"2020-10-22T13:28:27Z","type":"stable","version":"v1.6.4"}]` | - |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | yes | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.scorecard | 6.1 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=faiss-cpu&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Vector Databases)

| Capability | Faiss | Upstash |
|---|:--:|:--:|
| **Deployment** |  |  |
| Deployment | Self-hosted | Managed |
| Serverless / consumption pricing | ✗ | ✓ |
| **Index** |  |  |
| ANN index (HNSW / IVF / DiskANN / ScaNN / flat) | HNSW, IVF, PQ, multi-index, NSG | HNSW |
| Distance metrics (cosine / dot / Euclidean) | Euclidean (L2), inner product, L1, Linf | cosine |
| **Query** |  |  |
| Metadata filtering | - | Pre-filter |
| Hybrid search (dense + sparse fusion) | - | ✓ |
| Built-in BM25 / lexical | - | ✓ |
| **Storage** |  |  |
| Quantization | Product | - |
| On-disk vs in-memory | Disk-backed | persistent |
| **Scale** |  |  |
| Multi-tenancy (namespaces / collections / tenants) | - | ✓ |
| Horizontal scale | Single-node | Sharded / distributed |
| **Consistency** |  |  |
| Consistency | - | Strong |
| **Licensing** |  |  |
| Licence class | Permissive OSS | Proprietary |
| **Classification** |  |  |
| Purpose-built vs feature-of-parent | Extension | Dedicated DBMS |

*Source: vioscaleAI. Generated 2026-09-21T03:35:12.541Z. "-" = undocumented, not absent.*