The Eco release history records controlled engineering milestones for our lightweight model tier. A candidate checkpoint, test record or version number should not be mistaken for a publicly distributed model.
Current candidate.
Eco V1.1 A3b is an adapted Qwen3-0.6B research candidate. Its development record includes model specialisation, Thynkr-developed runtime environment work, candidate SDK testing and structured-task evaluation.
Why the gate remains open.
Evaluation found both encouraging results and regressions. The required sealed overall improvement threshold was not reached, and additional model behaviour, security, platform and licensing checks remain outstanding.
What happens next.
Research and release work proceeds through reproducible evaluation and independent acceptance. We will publish a download only after approved packages, platform support and legal notices are ready.
Changes to model weights, accepted versions and variants.
Developer platform
Thynkr-developed runtime environment, host integration and developer tools.
Engineering progress
Measurements, validation and testing. Never a release.
Platform qualification
Acceptance per operating system and hardware.
SDKEngineering milestone, not releasedArtifact: not available
Developer interface 2.0 and engine, host and SDK 0.4.0 built for independent verification
Developer platform · Interface 2.0 · SDK 0.4.0
Not released: a breaking interface revision (interface 2.0, with engine, host and SDK version 0.4.0) was approved and built on a development branch. A scoped security remediation has passed independent review. Additional release qualification remains open.
Technical details
Improvements and verified changes
Integrations built for the earlier private interface are refused rather than run unsafely.
Regression evidence was recorded on Linux and macOS.
Approved by Owner, THYNKR SYSTEMS LTD · published · revision 2
SecurityEngineering milestone, not releasedArtifact: not available
Independent security review rounds on the developer interface
Developer platform · Interface 1.1
Several rounds of independent security review and remediation of the developer interface took place on 29 and 30 October. A scoped security remediation has passed independent review. Additional release qualification remains open.
Technical details
Improvements and verified changes
Findings from successive reviews were corrected and re-tested.
Regression suites were extended for each correction.