Automation & Integration · head to head
Trigger.dev vs Letta
Trigger.dev
Automation & Integration
Build and deploy fully managed AI agents and workflows
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Trigger.dev compute is billed per second by machine size, from $0.0000169 per second on the smallest Micro instance up to $0.00068 per second on Large 2x, plus $0.000025 per run invocation, as of August 2026.; Letta the Developer API plan charges $0.10 per active agent per month plus $0.00015 per second of tool execution on top of a $20 per month base and pay-as-you-go LLM usage, as of August 2026.
Where they differ
Only the attributes on which Trigger.dev and Letta actually diverge.
| Attribute | Trigger.dev | Letta |
|---|
Identical on both: starting price (On request), pricing model (usage-based), free tier (No), platforms (Web), user rating (Not yet rated), category (Automation & Integration).
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Trigger.dev
- Compute is billed per second by machine size, from $0.0000169 per second on the smallest Micro instance up to $0.00068 per second on Large 2x, plus $0.000025 per run invocation, as of August 2026.
Letta
- The Developer API plan charges $0.10 per active agent per month plus $0.00015 per second of tool execution on top of a $20 per month base and pay-as-you-go LLM usage, as of August 2026.
Pricing, plan by plan
Trigger.dev
On requestNo published plan breakdown. See the Trigger.dev review.
Letta
On requestNo published plan breakdown. See the Letta review.
Which should you pick?
Choose Trigger.dev if
Nothing in the data separates Trigger.dev from Letta on the points above - pick on price and on how each one feels to use.
Choose Letta if
Nothing in the data separates Letta from Trigger.dev on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Trigger.dev or Letta better?
- Neither clearly leads. Trigger.dev starts at On request and Letta at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Trigger.dev or Letta?
- Trigger.dev starts at On request and Letta at On request.
- Does Trigger.dev or Letta run on more platforms?
- Both run on Web, so platform support will not decide this one for you.