VRM avatar compatibility
A VRM-style avatar in the experience view, with profiles and chat controls. Interface shown in Spanish.
Evidence ledger: five source-classified artifacts
Evidence that keeps its source and boundary attached.
Five artifacts cover visible exports, log telemetry and a reported migration; they are distinct evidence, not interchangeable samples.
- 4h 27m 35s
- Measured agenda duration
- Log-derived
- 104 pages
- Visible 1 Aug UI export
- Visible UI artifact
- 285
- Generations: 120 cloud / 165 local
- Log-derived
- 70 min
- Raw visible chat case
- Qualitative n=1
What works today
A supervised co-host loop, not an autonomy promise.
Kira can carry a prepared agenda, take direct input and recover across local and cloud providers. The streamer remains the editor and factual authority.
Product- Verified
Agenda continuity, Direct/PTT, chat input, BYOK and Ollama paths.
- Experimental
Stream connection and reactions were functional but uneven in the abandoned CTK prototype; Tauri carries them forward.
- Legacy Unstable
The CustomTkinter (CTK) prototype was fully abandoned in mid-July 2026; it lacks the interruption improvements.
See it in action
Current build · active since mid-2026
What OpenCohost looks like today
Seven screenshots from the real app — what the interface looks like, how you talk to Kira, how you set up your show, and where it started. The original prototype is included for reference.
App screenshots
Each image shows a real screen from the current or historical OpenCohost interface.
Native Tauri app
The current OpenCohost interface running natively. Avatar visible, profile list ready, local model connected and waiting.
Talk to Kira
Type or speak and Kira responds live. The conversation panel shows her active reply with the local model running.
Make it yours
Set your nickname, interests, editorial cards and slash commands so Kira knows your show before you go live.
Semi-autonomous topic agenda
Load a topic queue and let Kira run the segment in co-host mode. She picks up each topic, keeps the pacing, and you stay in control.
Previous CustomTkinter interface (deprecated)
The original desktop prototype before the Tauri migration. Fully abandoned — preserved here as a historical artifact.
Early MVP artifact
The first working build of OpenCohost. Preserved for historical context — shows how far the product has come.
Self-hosted alpha
Download the public alpha for Windows.
OpenCohost is a local-first open-source application and local AI co-host. The alpha installer is generated by CI and published on GitHub Releases. There is no hosted service and no bundled model: you bring Ollama, choose and download the models, and provide the hardware.
v0.3.0-alpha.4 · 588 MB · Windows 10/11 x64 · published Sep 9, 2026 · Verify the SHA256 checksums
Alpha build, generated by CI. If something misbehaves, report it — that feedback is what the alpha is for.
Product demo
Watch the current Kira walkthrough
See the current agenda, chat-context, co-host reaction, and interface flow before reviewing the dated build progress.
Audio: Spanish · Captions: auto-generated Spanish; YouTube may offer automatic English translation
Spanish audioYouTube
Current OpenCohost Kira walkthrough
The walkthrough shows the product direction in motion. Kira remains in active development and this demo is not a release promise.
Open on YouTube
Read the English demo summary
English summary of the walkthrough
This English summary covers agenda control, co-host reactions, chat context, voice coordination, and the current interface direction. The player provides auto-generated Spanish captions; availability and quality of YouTube automatic English translation can vary.
SOURCE-CLASSIFIED EVIDENCE
Original source artifacts with readable context first
Each summary precedes its PDF: visible UI, raw chat, log values and reported work records remain distinct.
Visible
Visible UI artifact
1 Aug raw long-session export
The 104-page UI export shows a 4h27m window at minute resolution; it is not a complete transcript or analytical telemetry.
- Visible
- 188 visible KIRA agenda-output markers; 6 operator messages and 6 visible direct-response headers with queue labels of 10s, 12s, 45s, 55s, 1s and 21s.
- Visible
- 4 cloud-down/restored cycles, 29 scheduled retries plus 4 forced retries, 23 visible guardrail rejections and 10 visible memory saves.
- Caveat
- Markers and headers are what the UI made visible; they do not establish full transcript coverage, causal performance or aggregate telemetry.
Measured
Log-derived
1 Aug telemetry analysis
Separate log-derived analysis; it does not derive from the visible UI export.
- Measured
- 4h 27m 35s, 285 generations, 120 cloud and 165 local; local fallback totals 2.62 h (58.6% of the session).
- Measured
- 4 cloud restorations and 194 prefetches are reported from traced runtime events.
- Caveat
- Its exact metrics are bounded to that instrumented run and are not a production guarantee.
Measured
Log-derived
30 Jul traced stress audit
Independent 30 Jul sample; the newer 1 Aug export does not supersede it.
- Measured
- 2h50m25s active agenda/audio, 169 completions, 139 TTS pipelines, and 1,625 fragments across 2h27m32s of audio. First fragment: median .37s, p95 .54s.
- Measured
- 86/87 accepted prefetch gaps were at most 100ms (median 46ms); context mean was 68.6%, with 1,126 pairs evicted across 15 topics.
- Visible difference
- Four direct questions were answered 14 to 29 minutes late in the 30 Jul audit; six 1 Aug visible queue labels were 1 to 55s. This is an observed difference suggesting improvement, not a guarantee.
- Caveat
- GLM5.2 and audible Unicode are operator observations, not log-proven. This audit does not test factual reliability, personality or production readiness.
Reported
Reported engineering record
2 Aug core-domain migration record
Work-record synthesis, not an independent live-repository audit.
- Reported
- 27 modules moved; 150 obsolete references in 45 files; 21 identical-blob renames plus 6 audited import/docstring changes.
- Reported
- It records 6 entrypoints, compileall, 5,142 collected tests, three introduced defects repaired, and a final reported 5,129 passed / 14 skipped plus one regression.
- Not demonstrated
- It does not show that main contains the migration, that the 7,009-line llm_engine.py God Object is solved, full DDD adoption or a production regression-free state.
Visible
Raw visible chat export
70-minute agenda chat export
One qualitative n=1 agenda chat, not telemetry or an evaluation study.
- Visible
- 70 minutes from 14:12 to 15:22; 10 topics; 59 Kira interventions and 2 operator interventions.
- Caveat
- This is a raw visible chat export; subjective usefulness is self-report, not productivity or learning proof.
EVIDENCE BOUNDARY
Not demonstrated
- Production-ready streaming, validation with external streamers, or viewer retention.
- Reliable live-chat understanding in real communities or factual reliability in sensitive domains.
- Safe autonomous hosting without human supervision.
- Productivity or learning gains from the single self-report chat case.
- A complete transcript, universal performance guarantee or independent audit of the reported migration.
CTK ABANDONED / TAURI SOURCE OF TRUTH
From abandoned prototype to source of truth
Since mid-July 2026 the Tauri app is the source of truth: the improved, stable version of the product. CustomTkinter (CTK) was a functional prototype, fully abandoned (Legacy Unstable) without the interruption improvements.
- Agenda continuity
- CTK · ABANDONED PROTOTYPE
Prototype evidence without interruption improvements - TAURI · SOURCE OF TRUTH
Source of truth: improved and stable - Stream reactions
- CTK · ABANDONED PROTOTYPE
Functional but irregular prototype behavior - TAURI · SOURCE OF TRUTH
Source of truth: current development - Memory and chat
- CTK · ABANDONED PROTOTYPE
Functional prototype behavior - TAURI · SOURCE OF TRUTH
Source of truth: improved and stable - User experience
- CTK · ABANDONED PROTOTYPE
Abandoned prototype - TAURI · SOURCE OF TRUTH
The current product interface
DIRECTION, NOT DATES
Project direction, without artificial dates
The horizon labels describe intent, not delivery promises. Circularity and factual discipline remain open research questions until they have suitable evidence.
- Now
Refine the Tauri source of truth and preserve observable failure states.
- Next
Prove stream reactions in Tauri and collect structured external feedback.
- Later
Broaden reproducible model and hardware matrices without universal claims.
- Open research
Circularity, factual discipline, conversational novelty and safer live behavior.