Releases

Changelog

New features and runtime releases. Newest first.

Sep 20266
Mozaik v4.0.6
Function call tool results that are already strings are no longer double-encoded with JSON.stringify.
1 contributor
View release notes
Sep 20264
Mozaik v4.0.5
Assistant model messages are written back into the agent's context after inference, and ModelContext.addItem is now addContextItem.
1 contributor
View release notes
Sep 20263
Mozaik v4.0.4
The agent loop start state is now message_received, with matching started and completed events.
1 contributor
View release notes
Sep 20263
Mozaik v4.0.3
Cloud payload field name corrected to manifest, and loop semantic events now include loopId.
1 contributor
View release notes
Sep 20263
Mozaik v4.0.2
Mozaik Cloud loop events now include the agent's manifest, developer message, tools, and memory.
1 contributor
View release notes
Sep 20263
Mozaik v4.0.1
Anthropic structured output uses the schema key expected by the API, and @mozaik-ai/cloud-sdk is upgraded to 0.1.0.
2 contributors
View release notes
Sep 20263
v4.0.0
Introducing Mozaik Cloud
Mozaik v4.0.0 adds Agent Loop, Interception, Situation Handlers, Participant Manifests, and Shared Runtime State — with Mozaik Cloud so you can watch it happen. Two native capabilities remain.
Miodrag Vilotijević Read article
Jun 20269
Mozaik v3.13.1
Capability validation moves into the domain layer, InferenceParams generics land, and per-model runtimes give way to endpoint mappers.
2 contributors
View release notes
Jun 20265
Mozaik v3.13.0
Structured output across OpenAI, Anthropic, and Gemini, inference by model name instead of internal objects, and error isolation in AgenticEnvironment.
4 contributors
View release notes
May 202629
Mozaik v3.12.0
Gemini and DeepSeek providers, Claude Opus 4.8, OpenAI-compatible Chat Completions, and a unified DefaultInferenceRunner.
3 contributors
View release notes
May 202627
Mozaik v3.11.0
The ModelRuntime port is restored, and Anthropic is a first-class provider.
1 contributor
View release notes
May 202620
Mozaik v3.10.0
Streaming inference lands as Semantic Events on the environment bus, with Agent, Human, and Observer participant classes.
1 contributor
View release notes
May 202627
Mozaik v3.10.3
AgenticEnvironment subscribe and unsubscribe lifecycle fixed for participants, plus a README refresh.
2 contributors
View release notes
May 202621
Mozaik v3.10.2
SemanticEvent is exported, so the type can be imported straight from the package.
1 contributor
View release notes
May 202620
Mozaik v3.10.1
Streaming, Semantic Events and BaseObserver documented; README examples moved to the current participant APIs.
1 contributor
View release notes
May 202619
Mozaik v3.9.5
Installation instructions for npm and pnpm.
1 contributor
View release notes
May 202618
Mozaik v3.9.4
Publishing fix: the npm token is handled correctly, so installs authenticate again.
1 contributor
View release notes
May 202617
Mozaik v3.9.3
AgenticEnvironment.start fixed.
1 contributor
View release notes
May 202613
Mozaik v3.8.8
README links the GitHub examples repository.
1 contributor
View release notes
May 202613
Mozaik v3.8.7
Event handlers can be synchronous or asynchronous.
1 contributor
View release notes
May 202613
Mozaik v3.8.6
Contribution guidelines added to the README.
1 contributor
View release notes
May 202612
Mozaik v3.8.5
Generators explained in the README.
1 contributor
View release notes
May 202612
Mozaik v3.8.4
Simpler README explanation of creating reactive agents.
1 contributor
View release notes
May 202611
Mozaik v3.8.3
README gains a section showcasing projects built with Mozaik.
1 contributor
View release notes
May 202611
Mozaik v3.8.2
README update.
1 contributor
View release notes
May 202611
Mozaik v3.8.1
README update.
1 contributor
View release notes
May 202611
Mozaik v3.8.0
Generic context item listeners replaced by concrete per-item listeners.
1 contributor
View release notes
May 202611
Mozaik v3.7.0
gpt-5.5 added, and participant context handling split into internal and external callbacks.
1 contributor
View release notes
May 20264
Mozaik v3.6.5
Participants get a public getter for the environments they belong to.
1 contributor
View release notes
Apr 202630
Mozaik v3.6.4
The AgenticEnvironment arrives: a shared runtime where humans, agents, observers and tools participate without blocking each other, with typed ContextItem streaming and BaseHuman and BaseAgent participants.
1 contributor
View release notes
Mar 202617
Mozaik v0.9.2
Reasoning effort enum exported to clients.
1 contributor
View release notes
Mar 202617
Mozaik v0.9.1
Reasoning effort support.
1 contributor
View release notes
Mar 202614
Mozaik v0.9.0
GPT-5.4 support.
1 contributor
View release notes
Feb 202613
Mozaik v0.8.4
Model detection fixed when calculating total cost.
1 contributor
View release notes
Feb 202613
Mozaik v0.8.2
Responses return the total cost.
1 contributor
View release notes
Feb 202612
Mozaik v0.7.2
Responses return usage tokens.
1 contributor
View release notes
Feb 202612
Mozaik v0.7.1
README update.
1 contributor
View release notes
Feb 202612
Mozaik v0.7.0
Package renamed from @jigjoy-ai/mozaik to @mozaik-ai/core.
1 contributor
View release notes
Feb 202612
Mozaik v0.6.0
Package renamed from @jigjoy-io/mozaic to @jigjoy-ai/mozaik; API responses include token usage.
1 contributor
View release notes
Jan 20264
Mozaik v0.5.1
Prettier setup with enforced formatting, and an extended logger hook.
1 contributor
View release notes
Dec 202516
Mozaik v0.5.0
Execution Hooks: observe and extend workflow execution without touching core logic, with a default logging hook cluster and per-run custom hooks.
1 contributor
View release notes
Dec 202510
Mozaik v0.4.0
Tool Calling: agents invoke application-defined functions to act beyond text.
1 contributor
View release notes
Dec 20257
Mozaik v0.3.0
PlanningAgent turns goals into executable workflows; Workflow composites run sequentially or in parallel, with nested plans and autonomous execution.
1 contributor
View release notes
Nov 202527
Mozaik v0.2.2
gpt-5.1 and claude-opus-4.5 supported; Anthropic model names simplified.
1 contributor
View release notes
Nov 202526
Mozaik v0.2.1
Structured output for OpenAI and Anthropic; Agent replaces MosaicAgent; the deprecated Chat Completion endpoint is dropped.
1 contributor
View release notes
Nov 202512
Mozaik v0.1.3
Import paths fixed in the deprecated Chat Completion endpoint.
1 contributor
View release notes
Nov 202511
Mozaik v0.1.2
Migrated to the OpenAI Responses endpoint.
1 contributor
View release notes
Nov 202511
Mozaik v0.1.1
TypeScript import paths fixed, a parallel task execution example in the README, and prompt renamed to task.
1 contributor
View release notes
Nov 202510
Mozaik v0.1.0
First release: one interface for OpenAI and Anthropic models with chat history, vision and prompt settings, and parallel task execution through agents.
1 contributor
View release notes

3alet · events

3alet Hackathon, 30–31 October.

Two days at Science and Technology Park Novi Sad, or online: build a team of agents on Mozaik. 60 seats on site. Leave your email to hear about every event first.

last timeSeptember 2026

Build with Mozaik

210: builders
82: countries
40: projects in one weekend

See the winners

Changelog

Mozaik v4.0.6

Mozaik v4.0.5

Mozaik v4.0.4

Mozaik v4.0.3

Mozaik v4.0.2

Mozaik v4.0.1

Introducing Mozaik Cloud

Mozaik v3.13.1

Mozaik v3.13.0

Mozaik v3.12.0

Mozaik v3.11.0

Mozaik v3.10.0

Mozaik v3.10.3

Mozaik v3.10.2

Mozaik v3.10.1

Mozaik v3.9.5

Mozaik v3.9.4

Mozaik v3.9.3

Mozaik v3.8.8

Mozaik v3.8.7

Mozaik v3.8.6

Mozaik v3.8.5

Mozaik v3.8.4

Mozaik v3.8.3

Mozaik v3.8.2

Mozaik v3.8.1

Mozaik v3.8.0

Mozaik v3.7.0

Mozaik v3.6.5

Mozaik v3.6.4

Mozaik v0.9.2

Mozaik v0.9.1

Mozaik v0.9.0

Mozaik v0.8.4

Mozaik v0.8.2

Mozaik v0.7.2

Mozaik v0.7.1

Mozaik v0.7.0

Mozaik v0.6.0

Mozaik v0.5.1

Mozaik v0.5.0

Mozaik v0.4.0

Mozaik v0.3.0

Mozaik v0.2.2

Mozaik v0.2.1

Mozaik v0.1.3

Mozaik v0.1.2

Mozaik v0.1.1

Mozaik v0.1.0

3alet Hackathon, 30–31 October.