# Fission vs Knative

| Attribute | Fission | Knative |
|---|---|---|
| **vioscaleAI score** | 53.5 (54% (medium)) | 53.8 (52% (medium)) |
| activity.commits_last_30d | 60 | 11 |
| adoption.dependent_repos | 3 | 446 |
| adoption.github_stars | 8,933 | 6,110 |
| content.faq | `[{"answer":"Developers write short-lived functions that are triggered by HTTP requests or events, while the framework handles Kubernetes infrastructure management automatically. This eliminates the need to manually build containers or manage registries. It is indexed under Serverless & Edge Platforms.","source":"https://fission.io","question":"What is Fission?","confidence":0.6},{"answer":"Fission is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://fission.io","question":"Is Fission free to use?","confidence":0.6},{"answer":"Fission supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://fission.io","question":"What platforms does Fission support?","confidence":0.6},{"answer":"Yes. Fission can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://fission.io","question":"Can Fission be self-hosted?","confidence":0.6},{"answer":"We have confirmed 6 integrations for Fission, including Kubernetes, Istio, Fluentd, Prometheus, Grafana and MCP. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://fission.io","question":"What does Fission integrate with?","confidence":0.6},{"answer":"Yes. Fission is published under the Apache-2.0 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/fission/fission","question":"Is Fission open source?","confidence":0.95}]` | `[{"answer":"Open-source platform for deploying and auto-scaling containerized serverless applications on Kubernetes with integrated event routing and HTTP/gRPC serving. It is indexed under Serverless & Edge Platforms.","source":"https://knative.dev","question":"What is Knative?","confidence":0.6},{"answer":"Knative is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://knative.dev","question":"Is Knative free to use?","confidence":0.6},{"answer":"Knative supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://knative.dev","question":"What platforms does Knative support?","confidence":0.6},{"answer":"Yes. Knative can be deployed on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://knative.dev","question":"Can Knative be self-hosted?","confidence":0.6},{"answer":"We have confirmed 5 integrations for Knative, including AWS S3, AWS SQS, AWS DynamoDB Streams, Apache Camel and Istio. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://knative.dev","question":"What does Knative integrate with?","confidence":0.6},{"answer":"Yes. Knative is published under the Apache-2.0 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/knative/serving","question":"Is Knative open source?","confidence":0.95}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source framework for building and deploying serverless functions on Kubernetes with automatic scaling. Supports multiple programming languages and can be triggered by HTTP requests, message queue events, and scheduled tasks. | A platform for building event-driven applications on Kubernetes, providing brokers and event sources to integrate cloud services like AWS with local event processing workflows. |
| features.capabilities | `{"hosting":"both","triggers":"HTTP and event triggers","languages":"Python, NodeJS, Go, Rust, C#, PHP (extensible to any language)","cold_start":"provisioned","cli_and_iac":true,"http_trigger":true,"scale_to_zero":true,"custom_runtime":true,"scheduled_cron":true,"edge_distributed":false,"runtime_substrate":"container","observability_builtin":true}` | `{"hosting":"self","triggers":"HTTP, CloudEvents, Kubernetes event sources","languages":"Any language via containerized HTTP/gRPC services","cold_start":"high","cli_and_iac":true,"http_trigger":true,"durable_state":true,"scale_to_zero":true,"custom_runtime":true,"runtime_substrate":"container","observability_builtin":true}` |
| integrations.count | 6 | 3 |
| integrations.list | `[{"name":"Kubernetes"},{"name":"Istio"},{"name":"Fluentd"},{"name":"Prometheus"},{"name":"Grafana"},{"name":"MCP"}]` | `[{"name":"AWS S3"},{"name":"AWS SQS"},{"name":"AWS DynamoDB Streams"},{"name":"Apache Camel"},{"name":"Istio"},{"name":"Apache Camel K","native":false,"direction":"inbound"}]` |
| language.primary | Go | Go |
| license.spdx | Apache-2.0 | Apache-2.0 |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","summary":"Free, open source under Apache License","freeTier":true,"sourceUrl":"https://fission.io","retrievedAt":"2026-08-14T09:18:36.308Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://knative.dev","retrievedAt":"2026-08-14T09:25:30.744Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 24 | 6 |
| release.history | `[{"url":"https://github.com/fission/fission/releases/tag/v1.27.0","date":"2026-06-22T15:02:22Z","type":"stable","version":"v1.27.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.26.0","date":"2026-06-13T11:47:51Z","type":"prerelease","version":"v1.26.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.25.0","date":"2026-06-05T11:49:37Z","type":"stable","version":"v1.25.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.24.0","date":"2026-05-26T19:01:42Z","type":"prerelease","version":"v1.24.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.23.0","date":"2026-05-15T04:57:05Z","type":"stable","version":"v1.23.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.22.0","date":"2025-12-18T17:01:59Z","type":"stable","version":"v1.22.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.22.0-rc2","date":"2025-12-15T11:49:48Z","type":"prerelease","version":"v1.22.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0","date":"2025-01-25T16:56:09Z","type":"stable","version":"v1.21.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0-rc2","date":"2025-01-24T05:32:02Z","type":"prerelease","version":"v1.21.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0-rc1","date":"2025-01-15T17:44:45Z","type":"prerelease","version":"v1.21.0-rc1"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.5","date":"2024-10-04T13:27:46Z","type":"stable","version":"v1.20.5"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.4","date":"2024-09-02T12:14:30Z","type":"stable","version":"v1.20.4"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.3","date":"2024-08-09T10:32:49Z","type":"stable","version":"v1.20.3"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.2","date":"2024-05-27T13:41:29Z","type":"stable","version":"v1.20.2"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.1","date":"2024-01-15T04:59:55Z","type":"stable","version":"v1.20.1"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0","date":"2023-11-30T16:29:49Z","type":"stable","version":"v1.20.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0-rc2","date":"2023-11-27T10:57:09Z","type":"prerelease","version":"v1.20.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0-rc1","date":"2023-10-30T14:51:08Z","type":"prerelease","version":"v1.20.0-rc1"},{"url":"https://github.com/fission/fission/releases/tag/v1.19.0","date":"2023-05-19T04:32:34Z","type":"stable","version":"v1.19.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.19.0-rc2","date":"2023-05-12T06:15:59Z","type":"prerelease","version":"v1.19.0-rc2"}]` | `[{"url":"https://github.com/knative/serving/releases/tag/knative-v1.23.0","date":"2026-07-29T09:58:30Z","type":"stable","version":"knative-v1.23.0"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.22.1","date":"2026-06-02T12:06:30Z","type":"stable","version":"knative-v1.22.1"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.21.3","date":"2026-06-02T12:06:29Z","type":"stable","version":"knative-v1.21.3"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.22.0","date":"2026-04-28T22:48:57Z","type":"stable","version":"knative-v1.22.0"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.21.2","date":"2026-03-24T11:28:14Z","type":"stable","version":"knative-v1.21.2"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.21.1","date":"2026-02-24T11:30:05Z","type":"stable","version":"knative-v1.21.1"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.20.3","date":"2026-02-24T11:36:40Z","type":"stable","version":"knative-v1.20.3"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.9","date":"2026-01-28T16:43:51Z","type":"stable","version":"knative-v1.19.9"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.21.0","date":"2026-01-27T11:40:37Z","type":"stable","version":"knative-v1.21.0"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.20.2","date":"2026-01-27T11:38:03Z","type":"stable","version":"knative-v1.20.2"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.20.1","date":"2025-12-25T05:43:18Z","type":"stable","version":"knative-v1.20.1"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.8","date":"2025-12-23T11:37:11Z","type":"stable","version":"knative-v1.19.8"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.20.0","date":"2025-10-29T10:19:44Z","type":"stable","version":"knative-v1.20.0"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.7","date":"2025-10-24T01:13:10Z","type":"stable","version":"knative-v1.19.7"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.18.2","date":"2025-10-24T01:15:27Z","type":"stable","version":"knative-v1.18.2"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.6","date":"2025-09-16T11:37:26Z","type":"stable","version":"knative-v1.19.6"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.5","date":"2025-09-09T11:32:10Z","type":"stable","version":"knative-v1.19.5"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.4","date":"2025-09-02T11:38:06Z","type":"stable","version":"knative-v1.19.4"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.3","date":"2025-09-02T03:29:43Z","type":"stable","version":"knative-v1.19.3"},{"url":"https://github.com/knative/serving/releases/tag/knative-v1.19.2","date":"2025-08-26T11:37:33Z","type":"stable","version":"knative-v1.19.2"}]` |
| security.disclosure_policy | - | yes |
| security.scorecard | 7.7 | 8.1 |
| security.vulnerabilities | `{"count":18,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffission%2Ffission&per_page=100","last_12m":18,"max_severity":"CRITICAL"}` | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=knative.dev%2Fserving&per_page=100","last_12m":0,"max_severity":"MODERATE"}` |

## Capabilities (Serverless & Edge Platforms)

| Capability | Fission | Knative |
|---|:--:|:--:|
| **Core** |  |  |
| Execution substrate | Container | Container |
| Language / runtime breadth | Python, NodeJS, Go, Rust, C#, PHP (extensible to any language) | Any language via containerized HTTP/gRPC services |
| **Reach** |  |  |
| Runs at global edge PoPs | ✗ | - |
| **Scale** |  |  |
| Scale to zero | ✓ | ✓ |
| **Performance** |  |  |
| Cold-start profile | Provisioned concurrency | High (VM / container) |
| **Limits** |  |  |
| Max execution duration | - | - |
| **Integration** |  |  |
| Event source breadth | HTTP and event triggers | HTTP, CloudEvents, Kubernetes event sources |
| HTTP endpoint trigger | ✓ | ✓ |
| Cron / scheduled invocations | ✓ | - |
| **State** |  |  |
| Durable state / workflow primitive | - | ✓ |
| **Flexibility** |  |  |
| Bring-your-own runtime / container | ✓ | ✓ |
| **Deployment** |  |  |
| Hosting | Cloud + self-hosted | Self-hosted only |
| **Ops** |  |  |
| Built-in logs / metrics / tracing | ✓ | ✓ |
| **Extensibility** |  |  |
| CLI + IaC / framework support | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-16T18:59:36.303Z. "-" = undocumented, not absent.*