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Head-to-head comparison

Gemma 4 26B A4B vs Solar Open2 250B

Gemma 4 26B A4B (Google) and Solar Open2 250B (Upstage) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 15 September 2026

As of 15 September 2026, Gemma 4 26B A4B holds the stronger ModelCap Index position (#39 vs #51); and Gemma 4 26B A4B ships open weights.

Which should you choose?

Choose Gemma 4 26B A4B if…

  • you want the stronger overall ModelCap Index position — #39 against #51 (65.0 vs 60.3 points).
  • you want to self-host: Gemma 4 26B A4B ships open weights while Solar Open2 250B is restricted license.
  • you want provider choice — 11 listed API providers against 0.

Choose Solar Open2 250B if…

  • AA Humanity's Last Exam is your yardstick — 28.5% against 11.5%.
  • you want the more recently listed model — Solar Open2 250B was listed 22 July 2026, Gemma 4 26B A4B 3 April 2026.

Gemma 4 26B A4B vs Solar Open2 250B: specs, pricing and context

Specification comparison of Gemma 4 26B A4B and Solar Open2 250B
FieldGemma 4 26B A4BGoogleSolar Open2 250BUpstage
ModelCap Index position#39#51
Index score65.060.3
EvidenceMeasuredEstimated
Input price / 1M tokens$0.09Unlisted
Output price / 1M tokens$0.30Unlisted
Context window262K tokens— tokens
Max output tokens236K—
API providers listed110
Weight accessOpen weightsRestricted license
Input modalitiesImage, Text, VideoText
First listed3 April 202622 July 2026
PublisherGoogleUpstage

Evidence: 2 public benchmark observations across 2 boards · publisher-corpus-prior over 193 held-out anchors (23%); launch card against 2 resolved peers on 4 rows (77%); exceeds every named peer on 4 of 4 rows; no cross-lab optimism probe available; shrunk 6 toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Gemma 4 26B A4B vs Solar Open2 250B

Public benchmark boards where Gemma 4 26B A4B or Solar Open2 250B has a published result
BoardGemma 4 26B A4BSolar Open2 250BLeads
Arena codingArena (LMArena)14811466–1496—Only one result
AA τ²-Bench TelecomArtificial Analysis40.4%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="Gemma 4 26B A4B (Non-reasoning)":reasoning=false—Only one result
AA Humanity's Last ExamArtificial Analysis11.5%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Gemma 4 26B A4B (Non-reasoning)":reasoning=false28.5%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Solar Open2 250B":reasoning=trueSolar Open2 250B

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Gemma 4 26B A4B vs Solar Open2 250B: common questions

Is Gemma 4 26B A4B better than Solar Open2 250B?

Gemma 4 26B A4B ranks higher on the ModelCap Index as of 15 September 2026: #39 against #51. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Gemma 4 26B A4B cheaper than Solar Open2 250B?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Gemma 4 26B A4B or Solar Open2 250B?

Both publish a 262K-token context window.

Which is better for coding, Gemma 4 26B A4B or Solar Open2 250B?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Gemma 4 26B A4B and Solar Open2 250B open-weight models?

Gemma 4 26B A4B: Open weights. Solar Open2 250B: Restricted license. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Gemma 4 26B A4B and Solar Open2 250B?

ModelCap currently lists 11 API providers for Gemma 4 26B A4B and 0 for Solar Open2 250B, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Gemma 4 26B A4B vs Solar Open2 250B comparison?

Every figure comes from the sealed ModelCap dataset published 15 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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