Skip to content
ModelCap

Head-to-head comparison

Kimi K2.7 Code vs Solar Open2 250B

Kimi K2.7 Code (Moonshot AI) 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 9 September 2026

As of 9 September 2026, Solar Open2 250B holds the stronger ModelCap Index position (#43 vs #47).

Which should you choose?

Choose Kimi K2.7 Code if…

  • you want provider choice — 14 listed API providers against 0.
  • AA Terminal-Bench 2.1 is your yardstick — 67.4% against 44.2%.
  • AA Humanity's Last Exam is your yardstick — 35.0% against 28.5%.

Choose Solar Open2 250B if…

  • you want the stronger overall ModelCap Index position — #43 against #47 (61.5 vs 59.5 points).
  • you want the more recently listed model — Solar Open2 250B was listed 22 July 2026, Kimi K2.7 Code 12 June 2026.

Kimi K2.7 Code vs Solar Open2 250B: specs, pricing and context

Specification comparison of Kimi K2.7 Code and Solar Open2 250B
FieldKimi K2.7 CodeMoonshot AISolar Open2 250BUpstage
ModelCap Index position#47#43
Index score59.561.5
EvidenceMeasuredEstimated
Input price / 1M tokens$0.71Unlisted
Output price / 1M tokens$3.50Unlisted
Context window262K tokens— tokens
Max output tokens236K—
API providers listed140
Weight accessRestricted licenseRestricted license
Input modalitiesText, ImageText
First listed12 June 202622 July 2026
PublisherMoonshot AIUpstage

Evidence: 2 public benchmark observations across 2 boards · publisher-corpus-prior over 182 held-out anchors (11%); launch card against 6 resolved peers on 17 rows (89%); exceeds every named peer on 5 of 17 rows; optimism haircut 0 from cross-lab-probe; shrunk 2.7 toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Kimi K2.7 Code vs Solar Open2 250B

Public benchmark boards where Kimi K2.7 Code or Solar Open2 250B has a published result
BoardKimi K2.7 CodeSolar Open2 250BLeads
AA Intelligence IndexArtificial Analysis26.3intelligence-index:v4.3:reasoning-unspecified—Only one result
AA Terminal-Bench 2.1Artificial Analysis67.4%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Kimi K2.7 Code":reasoning=true44.2%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Solar Open2 250B":reasoning=trueKimi K2.7 Code
AA τ²-Bench TelecomArtificial Analysis90.1%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="Kimi K2.7 Code":reasoning=true—Only one result
AA Humanity's Last ExamArtificial Analysis35.0%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Kimi K2.7 Code":reasoning=true28.5%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Solar Open2 250B":reasoning=trueKimi K2.7 Code
WildClawBench OpenClawWildClawBench46.9—Only one result

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.

Kimi K2.7 Code vs Solar Open2 250B: common questions

Is Kimi K2.7 Code better than Solar Open2 250B?

Solar Open2 250B ranks higher on the ModelCap Index as of 9 September 2026: #43 against #47. 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 Kimi K2.7 Code 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, Kimi K2.7 Code or Solar Open2 250B?

Both publish a 262K-token context window.

Which is better for coding, Kimi K2.7 Code or Solar Open2 250B?

AA Terminal-Bench 2.1: Kimi K2.7 Code 67.4%, Solar Open2 250B 44.2% — Kimi K2.7 Code leads.

Are Kimi K2.7 Code and Solar Open2 250B open-weight models?

Kimi K2.7 Code: Restricted license. 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 Kimi K2.7 Code and Solar Open2 250B?

ModelCap currently lists 14 API providers for Kimi K2.7 Code 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 Kimi K2.7 Code vs Solar Open2 250B 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.

Explore further