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Head-to-head comparison

Gemma 4 31B vs Qwen3.8 Flash

Gemma 4 31B (Google) and Qwen3.8 Flash (Qwen) 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 10 September 2026

As of 10 September 2026, Qwen3.8 Flash holds the stronger ModelCap Index position (#14 vs #27); Gemma 4 31B is 1.4× cheaper per output token ($0.34/1M vs $0.47/1M); Qwen3.8 Flash offers the longer context window (1M vs 262K tokens); and Gemma 4 31B ships open weights.

Which should you choose?

Choose Gemma 4 31B if…

  • API cost matters — $0.34/1M output tokens against $0.47/1M, about 1.4× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.09/1M against $0.15/1M.
  • you want to self-host: Gemma 4 31B ships open weights while Qwen3.8 Flash is restricted license.
  • you want provider choice — 13 listed API providers against 2.

Choose Qwen3.8 Flash if…

  • you want the stronger overall ModelCap Index position — #14 against #27 (78.0 vs 69.6 points).
  • you need the longer context window — 1M tokens against 262K.
  • AA Terminal-Bench 2.1 is your yardstick — 86.1% against 29.2%.
  • AA Humanity's Last Exam is your yardstick — 38.0% against 11.8%.
  • you want the more recently listed model — Qwen3.8 Flash was listed 26 August 2026, Gemma 4 31B 2 April 2026.

Gemma 4 31B vs Qwen3.8 Flash: specs, pricing and context

Specification comparison of Gemma 4 31B and Qwen3.8 Flash
FieldGemma 4 31BGoogleQwen3.8 FlashQwen
ModelCap Index position#27#14
Index score69.678.0
EvidenceMeasuredMeasured
Input price / 1M tokens$0.09$0.15
Output price / 1M tokens$0.34$0.47
Context window262K tokens1M tokens
Max output tokens16K131K
API providers listed132
Weight accessOpen weightsRestricted license
Input modalitiesImage, Text, VideoText, Image, Video
First listed2 April 202626 August 2026
PublisherGoogleQwen

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

Benchmark scores: Gemma 4 31B vs Qwen3.8 Flash

Public benchmark boards where Gemma 4 31B or Qwen3.8 Flash has a published result
BoardGemma 4 31BQwen3.8 FlashLeads
Arena codingArena (LMArena)14991484–1514—Only one result
AA Intelligence IndexArtificial Analysis—39.9intelligence-index:v4.3:reasoning-unspecifiedOnly one result
AA Terminal-Bench 2.1Artificial Analysis29.2%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false86.1%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Qwen3.8-Flash-Next":reasoning=trueQwen3.8 Flash
AA τ²-Bench TelecomArtificial Analysis65.5%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false—Only one result
AA Humanity's Last ExamArtificial Analysis11.8%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Gemma 4 31B (Non-reasoning)":reasoning=false38.0%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Qwen3.8-Flash-Next":reasoning=trueQwen3.8 Flash
WildClawBench OpenClawWildClawBench37.6—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.

Gemma 4 31B vs Qwen3.8 Flash: common questions

Is Gemma 4 31B better than Qwen3.8 Flash?

Qwen3.8 Flash ranks higher on the ModelCap Index as of 10 September 2026: #14 against #27. 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 31B cheaper than Qwen3.8 Flash?

Gemma 4 31B is cheaper on output tokens: $0.34/1M against $0.47/1M. Input tokens are $0.09/1M for Gemma 4 31B and $0.15/1M for Qwen3.8 Flash. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $0.35 for Gemma 4 31B versus $0.53 for Qwen3.8 Flash. Gemma 4 31B costs 34.6% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.

Which has the bigger context window, Gemma 4 31B or Qwen3.8 Flash?

Qwen3.8 Flash has the larger context window: 1M tokens against 262K.

Which is better for coding, Gemma 4 31B or Qwen3.8 Flash?

AA Terminal-Bench 2.1: Gemma 4 31B 29.2%, Qwen3.8 Flash 86.1% — Qwen3.8 Flash leads.

Are Gemma 4 31B and Qwen3.8 Flash open-weight models?

Gemma 4 31B: Open weights. Qwen3.8 Flash: 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 31B and Qwen3.8 Flash?

ModelCap currently lists 13 API providers for Gemma 4 31B and 2 for Qwen3.8 Flash, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Gemma 4 31B vs Qwen3.8 Flash comparison?

Every figure comes from the sealed ModelCap dataset published 10 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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