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Comparison · DevOps

Rivet vs Tigris

A side-by-side editorial comparison of Rivet and Tigris — release velocity, themes, recent moves, and the top alternatives to consider.

Shared themes:ai-agents

Rivet vs Tigris: at a glance

FeatureRivetTigris
SectorDevOpsDevOps
Velocity score1.38.8
Sparks · 30d02
Top themesactor-runtime, agent-infra, durable-workflows, edge-sqliteai-agents, object-storage, developer-tools, agent-infrastructure
Last editorial update5h ago1d ago
Website

What is Rivet?

Rivet stacked three actor primitives and a custom agent VM in 90 days.

Rivet shipped a coordinated set of actor primitives over three consecutive days in February — durable TypeScript Workflows, per-actor durable Queues, and per-actor SQLite that scales to zero — then introduced agentOS in April, a WASM-plus-V8-isolate VM for AI agents claiming ~6 ms cold starts and 32x lower cost than container sandboxes. The platform now spans the data, control-flow, and runtime layers an AI-agent builder otherwise stitches together. A May dashboard redesign followed the heavy platform-primitive push.

Read the full Rivet trajectory →

What is Tigris?

Tigris turns its object store into the substrate for AI-agent state.

Tigris is no longer marketing itself as just an S3-compatible object store. Nearly every release in the last six weeks targets AI-agent workflows: agent-shell for persistent bash sessions, Agent Kit for storage primitives, bucket forking for per-agent sandboxes, S2-based streaming for reasoning traces. The S3 API remains the substrate, but the product narrative has shifted to agent infrastructure.

Read the full Tigris trajectory →

Rivet vs Tigris: editorial side-by-side

R
Rivet
DEVOPS
1.3

Rivet stacked three actor primitives and a custom agent VM in 90 days.

◆ Current state

Rivet shipped a coordinated set of actor primitives over three consecutive days in February — durable TypeScript Workflows, per-actor durable Queues, and per-actor SQLite that scales to zero — then introduced agentOS in April, a WASM-plus-V8-isolate VM for AI agents claiming ~6 ms cold starts and 32x lower cost than container sandboxes. The platform now spans the data, control-flow, and runtime layers an AI-agent builder otherwise stitches together. A May dashboard redesign followed the heavy platform-primitive push.

◆ Where it's heading

Rivet is positioning itself as the actor-runtime substrate for AI agents: every release this year — Workflows, Queues, SQLite, Sandbox Agent SDK, agentOS — is something developers currently glue together themselves on top of AWS, Fly, or Cloudflare. The cadence is big launches rather than weekly increments; the past month of surface polish suggests the platform-primitive arc has hit a temporary plateau and the focus is shifting to ergonomics and adoption.

◆ Prediction

Expect dev tooling, SDK polish, and a positioning push around agentOS economics relative to Fly Machines, Cloudflare Workers, and AWS Firecracker sandboxes. A managed-cloud variant of agentOS or a v2 of the Sandbox Agent SDK would be the natural next flagship.

T
Tigris
DEVOPS
8.8

Tigris turns its object store into the substrate for AI-agent state.

◆ Current state

Tigris is no longer marketing itself as just an S3-compatible object store. Nearly every release in the last six weeks targets AI-agent workflows: agent-shell for persistent bash sessions, Agent Kit for storage primitives, bucket forking for per-agent sandboxes, S2-based streaming for reasoning traces. The S3 API remains the substrate, but the product narrative has shifted to agent infrastructure.

◆ Where it's heading

The company is building out a coherent stack of agent-native primitives on top of object storage — forks, snapshots, workspaces, notifications-as-events, durable streams. Each release adds another layer that lets developers treat a bucket as session state rather than a passive data store. The bet is that owning the storage layer becomes a defensible position as agent frameworks proliferate.

◆ Prediction

Expect tighter integration with agent frameworks next, likely a managed agent-shell runtime or a binding between Tigris snapshots and Mastra/Anthropic SDK session checkpoints. The homepage embed is a tell — they're trying to make the developer's first interaction with Tigris feel like agent infrastructure, not storage.

Alternatives to Rivet and Tigris

Other DevOps products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Rivet or Tigris.

See all Rivet alternatives → · See all Tigris alternatives →

Recent activity from Rivet and Tigris

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 2d agoTigrisHow small can we make an interface to Tigris?
  2. 3d agoRivetDashboard Redesign
  3. 4d agoTigrisOwn Your AI Context with Basic Memory
  4. 18d agoTigrisDurable global streams in Tigris with S2
  5. 18d agoTigrisBuild a Self-Updating Knowledge Base for Under $10
  6. 23d agoTigrisWe gave just-bash persistent storage
  7. 23d agoTigrisThe Immutable Agent
  8. 1mo agoRivetIntroducing agentOS
  9. 2mo agoRivetIntroducing SQLite for Rivet Actors
  10. 2mo agoRivetIntroducing Queues for Rivet Actors
  11. 2mo agoRivetIntroducing Rivet Workflows
  12. 3mo agoRivetSwift SDK, Sandbox Agent SDK, and Vercel deployment examples

Frequently asked questions

What is the difference between Rivet and Tigris?

Both compete on the same themes — ai-agents — within DevOps. Tigris is currently shipping more aggressively (velocity 8.8 vs 1.3), with 2 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Rivet better than Tigris?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Tigris is currently shipping more aggressively (velocity 8.8 vs 1.3), with 2 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.

What are the best alternatives to Rivet?

Top Rivet alternatives in DevOps are ranked by recent ship velocity. Browse the "Rivet alternatives" section above for the current picks, or visit /alternatives/rivet for the full list with editorial commentary on each.

What are the best alternatives to Tigris?

Top Tigris alternatives in DevOps are ranked by recent ship velocity. Browse the "Tigris alternatives" section above for the current picks, or visit /alternatives/tigris for the full list with editorial commentary on each.