NexArt
Cryptographically sealed, independently verifiable evidence of what your AI executed.
At a glance
Free + paid · Source review 2026-11-04- Price & billing
Execution is always free: local SDK and CLI generation of Certified Execution Records costs nothing. Free certification is $0 with 100 certified runs per month, up to 2 active API keys, full SDK and CLI access, and a shared attestation node with a hard cap. Pro is listed at $6,000 per year with 5,000 certified runs per month, in $ without a named currency, so no charge fact is recorded. Annual billing includes a 2-month discount.
- Free allowance
Execution is always free: local SDK and CLI generation of Certified Execution Records costs nothing. Free certification is $0 with 100 certified runs per month, up to 2 active API keys, full SDK and CLI access, and a shared attestation node with a hard cap.
- Best suited to
Engineering teams whose AI decisions may be challenged, since a Certified Execution Record gives auditors and partners independently verifiable evidence instead of internal logs that can be edited or reconstructed.; Regulated workflows and financial services that need audit trails, since NexArt targets governed AI execution, EU AI Act audit trails, customer disputes, audit requests, and incident investigations.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Engineering teams whose AI decisions may be challenged, since a Certified Execution Record gives auditors and partners independently verifiable evidence instead of internal logs that can be edited or reconstructed.; Regulated workflows and financial services that need audit trails, since NexArt targets governed AI execution, EU AI Act audit trails, customer disputes, audit requests, and incident investigations.
Limits and trade-offs
Teams that only need internal debugging logs, since NexArt's value is independent certification for external reviewers, while execution itself is free locally without certification.; Builders who need unlimited certified runs on the free tier, since Free is hard-capped at 100 certified runs per month with up to 2 API keys.
Plans and free allowances
Execution is always free: local SDK and CLI generation of Certified Execution Records costs nothing. Free certification is $0 with 100 certified runs per month, up to 2 active API keys, full SDK and CLI access, and a shared attestation node with a hard cap. Pro is listed at $6,000 per year with 5,000 certified runs per month, in $ without a named currency, so no charge fact is recorded. Annual billing includes a 2-month discount.
Evidence
NexArt homepage ↗ (reviewed 2026-11-04), NexArt pricing ↗ (reviewed 2026-11-04)
Official published documentation reviewed; not a product test
Dates: Last reviewed 2026-11-04. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at NexArt
NexArt creates verifiable evidence of what an AI executed. When an AI decision is challenged, internal logs are not enough because they can be edited, deleted, or reconstructed, and inputs, parameters, and outputs are often stored separately. NexArt turns an execution into a Certified Execution Record: a portable, cryptographically sealed, independently verifiable evidence package of what ran, on which inputs, by which system. One SDK call records selected inputs, parameters, outputs, and context at runtime with no middleware, proxy, or infrastructure change; the attestation node checks and signs the record, and any third party can verify it with the record, signature, and node public key, without a NexArt account. It supports builders with SDKs, CLI, LangChain, and n8n, and use cases include governed AI execution, AI agent execution, regulated workflows, governed decisions, EU AI Act audit trails, and financial services.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose NexArt
- Engineering teams whose AI decisions may be challenged, since a Certified Execution Record gives auditors and partners independently verifiable evidence instead of internal logs that can be edited or reconstructed.
- Regulated workflows and financial services that need audit trails, since NexArt targets governed AI execution, EU AI Act audit trails, customer disputes, audit requests, and incident investigations.
When to choose something else
- Teams that only need internal debugging logs, since NexArt's value is independent certification for external reviewers, while execution itself is free locally without certification.
- Builders who need unlimited certified runs on the free tier, since Free is hard-capped at 100 certified runs per month with up to 2 API keys.
A practical starting workflow
- Add one SDK call to record selected inputs, parameters, outputs, and execution context at runtime.
- Generate the Certified Execution Record locally with the SDK or CLI at no cost.
- Send the record for independent certification via the NexArt attestation node on a paid plan, or use the free 100 certified runs per month.
- Share the certified record so any third party can verify its integrity with the record, signature, and node public key, without needing an account.
Check before committing
- Execution itself is free: paid plans add independent certification via the attestation node, so uncertified local records and certified runs are different things and should not be conflated.
- Free is hard-capped at 100 certified runs per month with up to 2 active API keys, so higher-volume certification needs Pro.
- NexArt does not claim to prove model correctness or to make AI deterministic; its FAQ topics include those limits, and this page records certification of execution, not correctness.
Common questions
What is NexArt?
NexArt turns an AI execution into a Certified Execution Record: portable, cryptographically sealed, independently verifiable evidence of what ran, on which inputs, by which system.
What is a Certified Execution Record and how is it verified?
A lightweight SDK records selected inputs, parameters, outputs, and execution context at runtime and seals them into a tamper-evident artifact; the NexArt attestation node checks and signs the record, and any third party with the record, signature, and node public key can verify it independently.
Can anyone verify a record?
Verification does not need a NexArt account: the record is publicly verifiable with standard hashes, signatures, and public keys, while sensitive inputs and outputs stay private.
How much does NexArt cost?
Execution is always free with local SDK and CLI record generation at no cost. Free certification is $0 with 100 certified runs per month; Pro is listed at $6,000 per year with 5,000 certified runs per month, in $ without a named currency.
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Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.