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Head-to-head comparison

MiniCPM5 2B vs Solar Pro 4

MiniCPM5 2B (Openbmb) and Solar Pro 4 (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 9 September 2026

As of 9 September 2026, MiniCPM5 2B holds the stronger ModelCap Index position (#91 vs #93); and MiniCPM5 2B ships open weights.

Which should you choose?

Choose MiniCPM5 2B if…

  • you want the stronger overall ModelCap Index position — #91 against #93 (43.3 vs 42.3 points).
  • you want to self-host: MiniCPM5 2B ships open weights while Solar Pro 4 is api only.
  • you want the more recently listed model — MiniCPM5 2B was listed 6 September 2026, Solar Pro 4 10 August 2026.

Choose Solar Pro 4 if…

  • you want provider choice — 1 listed API providers against 0.
  • AA Terminal-Bench 2.1 is your yardstick — 57.3% against 8.6%.
  • AA Humanity's Last Exam is your yardstick — 29.2% against 8.9%.

MiniCPM5 2B vs Solar Pro 4: specs, pricing and context

Specification comparison of MiniCPM5 2B and Solar Pro 4
FieldMiniCPM5 2BOpenbmbSolar Pro 4Upstage
ModelCap Index position#91#93
Index score43.342.3
EvidenceMeasuredMeasured
Input price / 1M tokensUnlisted$0.03
Output price / 1M tokensUnlisted$0.12
Context window— tokens524K tokens
Max output tokens—131K
API providers listed01
Weight accessOpen weightsAPI only
Input modalitiesTextText
First listed6 September 202610 August 2026
PublisherOpenbmbUpstage

Evidence: 1 public benchmark observation across 1 board · 3 public benchmark observations across 3 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: MiniCPM5 2B vs Solar Pro 4

Public benchmark boards where MiniCPM5 2B or Solar Pro 4 has a published result
BoardMiniCPM5 2BSolar Pro 4Leads
Arena codingArena (LMArena)—14471425–1470Only one result
LMArena AgentLMArena—-11.3%-15.0%–-7.5%Only one result
AA Intelligence IndexArtificial Analysis13.1intelligence-index:v4.3:reasoning-unspecified—Only one result
AA Terminal-Bench 2.1Artificial Analysis8.6%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="MiniCPM5-2B":reasoning=true57.3%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Solar Pro 4":reasoning=trueSolar Pro 4
AA Humanity's Last ExamArtificial Analysis8.9%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="MiniCPM5-2B":reasoning=true29.2%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Solar Pro 4":reasoning=trueSolar Pro 4

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.

MiniCPM5 2B vs Solar Pro 4: common questions

Is MiniCPM5 2B better than Solar Pro 4?

MiniCPM5 2B ranks higher on the ModelCap Index as of 9 September 2026: #91 against #93. 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 MiniCPM5 2B cheaper than Solar Pro 4?

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, MiniCPM5 2B or Solar Pro 4?

Both publish a —-token context window.

Which is better for coding, MiniCPM5 2B or Solar Pro 4?

AA Terminal-Bench 2.1: MiniCPM5 2B 8.6%, Solar Pro 4 57.3% — Solar Pro 4 leads.

Are MiniCPM5 2B and Solar Pro 4 open-weight models?

MiniCPM5 2B: Open weights. Solar Pro 4: API only. 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 MiniCPM5 2B and Solar Pro 4?

ModelCap currently lists 0 API providers for MiniCPM5 2B and 1 for Solar Pro 4, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this MiniCPM5 2B vs Solar Pro 4 comparison?

Every figure comes from the sealed ModelCap dataset published 9 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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