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Groq vs Letta

Letta scores higher on the AgentReady, 72/100 against 64/100. They differ on 6 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Groq. Groq is an AI inference company that pioneered the LPU (Language Processing Unit) and provides fast, reliable, affordable inference at scale.

Letta. Letta is an AI research lab in San Francisco building machines that learn.

Where Groq is ahead

Groq passes structured api reference, and Letta does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

Where Letta is ahead

Letta passes clear canonical domain, and Groq does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: pricing understandable. Groq misses it.

And on adopt, free trial or free allowance and cli available. Groq misses those.

Finally, on operate, agent compatibility verified. Groq misses it.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, programmatic credential creation, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. Letta leads 100 to 93. Groq misses clear canonical domain; Letta misses nothing.

Understand. Groq leads 46 to 38. Groq misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented; Letta misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. Letta leads 81 to 70. Groq misses no mandatory sales call, programmatic credential creation, free trial or free allowance, cli available; Letta misses no mandatory sales call, programmatic credential creation.

Operate is whether an agent can run against it in production and recover when a call fails. Letta leads 67 to 47. Groq misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Letta misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

Groq does not publish a machine-readable starting price. Letta starts at $0/mo and has a free tier.

Signal by signal

Which to pick

Letta clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Groq and Letta. Alternatives to each: Groq, Letta.

An agent can fetch this as data: POST /v1/compare {"slugs": ["groq", "letta"]}