Independent evaluations will determine whether Upstage's Solar Open 2 250B-A15B open-weight MoE is competitive with DeepSeek V4 Flash for coding and practical local inference.
state: expiredheat: lowuncertainty: highknownscott: mediumsolar-open-2 open-models local-inferenceUpstage
What is this?
Upstage’s Solar Open 2 is an open-weight mixture-of-experts model with 250B total parameters and 15B active; Upstage reports strong scores including 92.4 on LiveCodeBench v6 and 70.4 on SWE-Bench Verified, but the supplied source says these remain vendor claims pending independent evaluation. DeepSeek V4 Flash is described as a 284B MoE with 13B active, strong coding performance, and very low API pricing, with one task-based test reporting that it won 7 of 20 tasks. The supplied evidence does not establish Solar Open 2’s actual local hardware requirements or independently demonstrate that it is competitive with V4 Flash in practical local inference.
Why it matters to Scott
The radar already tracks this same development in `radar:solar-open2-performance-validation`, including independent validation of Solar Open 2’s coding quality and inference costs. It bears directly on Scott’s trace-backed, model-plus-harness evaluation practice and hardware-aware local inference work, but this case adds no new evaluation result or deployment evidence yet.
ip:concept.capability-auditip:concept.model-plus-harness-benchmark-unitdev:concept.trace-backed-agent-comparisondev:concept.hardware-aware-local-inferencedev:project.gamepcradar:solar-open2-performance-validationradar:deepseek-v4-flash-terminal-bench-replicationradar:deepseek-v4-flash-harness-efficiencyradar:concept.local-inference
queries asked of Scott's wikis
- independent evaluation of coding models beyond benchmarks
- sparse MoE local inference memory and hardware economics
- open-weight model selection for coding agents
- active parameters versus total model deployment cost
- vendor benchmarks versus real-world agent evaluations
- open models and model sovereignty in Asia
Measured heat
no measured readings yet — the hourly heat pass fills this in
How the heat travelled
no chain yet — the hourly chain pass fills this in
Evidence (1) — ⭐ canonical anchor
Interpretation history
2026-08-13T15:36:45Z
The originating discussion has faded without producing an independent evaluation, deployment report, or concrete local-inference evidence. The broader validation question remains open elsewhere on the radar, but this episode no longer merits continued tracking.
2026-08-11T14:55:32Z
Refreshed comments add only a tentative serving concern and an unfavorable test of a likely different Solar model; neither validates Solar Open 2’s coding ability or local-inference practicality. The case remains an open evaluation question, but this discussion is weak and cooling.
2026-08-11T14:39:40Z
grounded: known/medium — The radar already tracks this same development in `radar:solar-open2-performance-validation`, including independent validation of Solar Open 2’s coding quality
2026-08-11T14:36:54Z
case created — The linked open-weight model is a concrete release whose capability and deployment characteristics remain unresolved.
Decision trace
- 08-14 01:36expireThe originating discussion has faded without producing an independent evaluation, deployment report, or concrete local-inference evidence. The broader validation question remains open elsewhere on the
- 08-14 01:36alert_silentOnly staleness and negligible engagement movement occurred; there is no new capability, access, pricing, or deployment fact to surface.
- 08-14 01:36alert_routeOnly staleness and negligible engagement movement occurred; there is no new capability, access, pricing, or deployment fact to surface.
- 08-12 00:55repriceRefreshed comments add only a tentative serving concern and an unfavorable test of a likely different Solar model; neither validates Solar Open 2’s coding ability or local-inference practicality. The
- 08-12 00:55alert_silentNo independent Solar Open 2 evaluation, deployment result, or access change occurred; ambiguous Reddit commentary can wait for substantive testing.
- 08-12 00:55alert_routeNo independent Solar Open 2 evaluation, deployment result, or access change occurred; ambiguous Reddit commentary can wait for substantive testing.
- 08-12 00:53alert_silentThis is only an untested Reddit request for comparisons, with no evaluation result, deployment evidence, or other consequential change beyond the already tracked model release and validation question.
- 08-12 00:53alert_routeThis is only an untested Reddit request for comparisons, with no evaluation result, deployment evidence, or other consequential change beyond the already tracked model release and validation question.
- 08-12 00:39groundThe radar already tracks this same development in `radar:solar-open2-performance-validation`, including independent validation of Solar Open 2’s coding quality and inference costs. It bears directly o
- 08-12 00:36createThe linked open-weight model is a concrete release whose capability and deployment characteristics remain unresolved.