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Changelog

What's coming next and what shipped recently.

Up Next

  • Synth Workshop v0.5 — Increase your Experiments Per Minute
  • Research agents
  • GEPA for coding agents
  • GitHub Actions

Latest Updates

Aug 22, 2026
workshopreleasemacosv0.7

Synth Workshop v0.7.3

ALFWorld local training support, stricter hosted CISPO admission, and explicit container provenance.

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Aug 22, 2026
workshopreleasemacosv0.7

Synth Workshop v0.7.4

Exact training-workload selection, bounded local training, and honest terminal run cards.

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Aug 21, 2026
workshopreleasemacosv0.7

Synth Workshop v0.7.2

Packaged local MLX training, durable optimizer evidence, and a more reliable v0.7 release candidate.

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Aug 19, 2026
workshopreleasemacosv0.6

Synth Workshop v0.6.0

Durable optimizer workflows, real local Qwen MLX SFT, paired held-out evaluation, and fail-closed evidence contracts.

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Aug 17, 2026
workshopreleasemacosv0.5

Synth Workshop v0.5.0

First broadly distributed Synth Workshop release. Increase your Experiments Per Minute with local and API-native evals, environment QA, GEPA, and SFT.

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Aug 15, 2026
workshopdesktopreleasemacos

Synth Workshop v0.3.0

Local reports, durable approvals, trace inspection, and a more capable Context and subagent experience for Synth Desktop.

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Aug 13, 2026
workshopdesktopreleasemacos

Synth Workshop v0.2.0

A more reliable local and cloud workbench, with managed Laguna XS, Trace V5 inspection, and hardened native routing.

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Aug 11, 2026
workshopdesktoplagunarelease

Synth Workshop v0.1 Friends Release

Download Synth Desktop for Apple silicon Macs.

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Jul 16, 2026
managed-researchresearch-factorycraftax

Research Factory: Preview, Confirm, and Inspect

Research Factory adds exact wake previews, explicit confirmation, bound receipts, recurring controls, and direct WorkProduct inspection.

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Jul 13, 2026
managed-researchresearch-factorycraftaxfactorybench

Research Factory With Held-Out Craftax Proof

Research Factory adds typed research and maintenance cycles, immutable candidates, and benchmark-owned grading through synth-ai 0.15.0.

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Jul 2, 2026
stackrelease

Stack releases

Stable and nightly Stack releases with what shipped in each.

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Jul 1, 2026
stackagentsmonitor

Stack sidecar monitor — a separate stream for long agent runs

Goal mode in Stack now defaults to a Sidecar events feed: a monitor agent that narrates progress, audits done-claims, and steers the worker — instead of reading every tool call.

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Jun 26, 2026
gelohosted-optimizersgamebenchpromo

GELO hosted optimizer — 72-hour free promo

Hosted GELO relaunches with a 72-hour proposer-spend promo, GameBench Rust smoke presets, and invite-only plugin lane copy.

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Jun 26, 2026
managed-researchsynth-tagresearch-factorygamebenchlaunch

Managed Research weekly: Tag beta, Factory proof, GameBench pilot

A scoped Managed Research launch update covering Synth Tag beta, Research Factory proof-tier work, SMR reliability evidence, and GameBench pilot runs.

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Jun 25, 2026
managed-researchxaigroklaunch

Managed Research: Direct xAI Grok Build

Hosted SMR runs on Grok Build over direct xAI, with a simplified public Grok catalog and synth-ai 0.11.7.

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Jun 18, 2026
open-researchmanaged-researchresearch-factorylaunch

Open Research Factory Production Proof

Open Research Factory now publishes a production proof run with a receipt, artifact bundle, and private-work firewall.

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Jun 11, 2026
gelohosted-optimizersprompt-optimizationpromo

GELO Hosted Optimizer Launch Promo

Hosted GELO is available for checkpoint-native long-horizon optimization, with a launch promo for hosted proposer spend.

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Feb 20, 2026
managed-researchhorizonsbillinggepamipro

Managed Research Launch, Horizons Agent Runtime

Friday product updates for February 20, 2026.

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Feb 13, 2026
gepahorizonsauthenticationwebhooksconfig

Horizons v0.1.2: Production Ready

Friday product updates for February 13, 2026.

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Feb 7, 2026
horizonsopen-sourceenvironment-poolsrlmmipro

Horizons OSS Launch, Environment Pools, RLM v1 & MIPRO Offline

Friday product updates for February 7, 2026.

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Feb 6, 2026
environment-poolsharborbrowsergepainfrastructure

Environment Pools

Friday product updates for February 6, 2026.

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Jan 29, 2026
tunnelssynthtunneldeployharborgepa

SynthTunnel, Deploy & Harbor, Event Fixes

Friday product updates for January 29, 2026.

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Jan 23, 2026
reliabilitytracestunnelsgepa

Reliability: Trace Uploads, Tunnel DNS, Rollout Stability

Friday product updates for January 23, 2026.

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Jan 17, 2026
gepacoding-agentscodexopencodeagents-md

GEPA for Coding Agents

Friday product updates for January 17, 2026.

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Jan 10, 2026
pricingbyoktuisdkimage-gen

Pro & Team Plans, Image-Gen Support

Friday product updates for January 10, 2026.

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Jan 2, 2026
sdkverifiersgraphsnaming

Verifier-First Naming & SDK Alignment

Friday product updates for January 2, 2026.

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Dec 26, 2025
localapirolloutstracessdkgspo

LocalAPI Simplification & Trace-First Rollouts

Friday product updates for December 26, 2025.

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Dec 19, 2025
graphs-apigraphgenverifiersrlmmonitoring

Graphs API, Graph Gen Workflows & Verifier Graphs

Friday product updates for December 19, 2025.

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Dec 12, 2025
graph-optimizationevolveworkflowssdkapi

Graph Evolve: Optimize LLM Workflow Graphs

Automatically evolve multi-step LLM workflows with evolutionary optimization.

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Dec 5, 2025
pricingrate-limitsmiprogepasse

Free Tier, Rate Limits & Visualization Updates

Friday product updates for December 5, 2025.

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Nov 28, 2025
researchpolyglotautomationmipro

Research Agents & Language-Agnostic Optimization

Friday product updates for November 28, 2025.

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Nov 21, 2025
task-appsgepamiprogeminiexamples

In-Process Task Apps, Gemini 3 & Production Examples

Friday product updates for November 21, 2025.

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Nov 14, 2025
cliartifactsqueuepricingtunnels

Artifacts CLI, Experiment Queue & Session Pricing

Friday product updates for November 14, 2025.

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Nov 7, 2025
multi-stagegepamiprogeminiopenai

Multi-Stage Optimizers & GEPA Algorithm

Friday product updates for November 7, 2025.

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Oct 31, 2025
traininglogsverifiersqwen-vlrl

Terminal Training Logs & Qwen-VL RL

Friday product updates for October 31, 2025.

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Oct 17, 2025
qwentursoh200rllora

Qwen Coder, Turso & H200 Topologies

Friday product updates for October 17, 2025.

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Oct 10, 2025
loramoeqwenlarge-models

LoRA, MoE & Large Model Support

Friday product updates for October 10, 2025.

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Sep 26, 2025
platformgpuinference

Platform Updates

Friday product updates for September 26, 2025.

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Sep 19, 2025
rlonlinetask-apps

Online RL (customer-visible features)

Friday product updates for September 19, 2025.

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Aug 8, 2025
sdksftcli

SDK Releases 0.2.2.dev1 & 0.2.2.dev2

Friday product updates for August 8, 2025.

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Aug 1, 2025
sdkenvironmentturso

SDK Releases 0.2.1.dev1 & 0.2.2.dev0

Friday product updates for August 1, 2025.

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