What are Solar Open2 250B's benchmark scores?

As of 25 Oct 2026, Solar Open2 250B scores 53.6 ±4.2 on the BenchLeader Index, strongest in knowledge (61) and weakest in agents & tools (50). That rests on 5 independent benchmark results, and every score on this page links to its publisher.

How does Solar Open2 250B rank?

Solar Open2 250B is #283 of 785 ranked configurations on 25 Oct 2026. 293 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.

When was Solar Open2 250B released?

Upstage released Solar Open2 250B on 12 Aug 2026.

Upstage Open weights: upstage/Solar-Open2-250BReasoning modelCompare with another model

Solar Open2 250B

Solar Open2 250B is an Upstage open-weights reasoning model, released 12 Aug 2026. Its best configuration ranks #283 of 785 on the BenchLeader Index at 53.6 ±4.2, in the upper half. The ± is the point: 293 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in knowledge (61) and lowest in agents & tools (50). Last measured 12 Aug 2026.

Blended price: –
Output speed: –
First answer: –
Context: 1.0M
Full answer: –
Cost per run: –
Released: 12 Aug 2026

How it scores by categoryDashed line = average model (50). One step of 15 = one standard deviation.

Overall index54
Reasoning50
Agents & tools50
Knowledge61
Long context61
Composite57

How its index has moved

19 Sept 2026 to 19 Oct 2026

The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.

Benchmark results

See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.

Reasoning

Benchmark	not stated	Source
GPQA Diamond (AA)not in index	85.7%#120	Artificial Analysis
Humanity's Last Exam (AA)not in index	28.5%#161	Artificial Analysis
CritPt	5.7%#148	Artificial Analysis

Coding

Benchmark	not stated	Source	Trend
SciCode (AA)not in index	48.0%#127	Artificial Analysis
Terminal-Bench 2.1 (AA)not in index	44.2%#130	Artificial Analysis

Agents & tools

Benchmark	not stated	Source	Trend
GDPval-AA v2.1not in index	23.5%#97	Artificial Analysis
τ³-Banking (AA)	21.6%#91	Artificial Analysis

Knowledge

Benchmark	not stated	Source
AA-Omniscience	-1.8#145	Artificial Analysis
AA-Omniscience: accuracynot in index	18.8%#326	Artificial Analysis
AA-Omniscience: non-hallucinationnot in index	74.6%#23	Artificial Analysis

Long context

Benchmark	not stated	Source	Trend
AA-LCR	71.7%#196	Artificial Analysis

Composite

Benchmark	not stated	Source	Trend
AA Intelligence Index v4.3.2	24.7#170	Artificial Analysis

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Questions people ask

What are Solar Open2 250B's benchmark scores?: As of 25 Oct 2026, Solar Open2 250B scores 53.6 ±4.2 on the BenchLeader Index, strongest in knowledge (61) and weakest in agents & tools (50). That rests on 5 independent benchmark results, and every score on this page links to its publisher.
How does Solar Open2 250B rank?: Solar Open2 250B is #283 of 785 ranked configurations on 25 Oct 2026. 293 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.
When was Solar Open2 250B released?: Upstage released Solar Open2 250B on 12 Aug 2026.

Data as of 25 Oct 2026. Compare with another model.

Cite as: BenchLeader, “Solar Open2 250B: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/solar-open2-250b.