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Head-to-head comparison

Gemini 3.8 Flash vs Qwen3.5 397B A17B

Gemini 3.8 Flash (Google) and Qwen3.5 397B A17B (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 3 September 2026

As of 3 September 2026, Gemini 3.8 Flash holds the stronger ModelCap Index position (#11 vs #28); Qwen3.5 397B A17B is cheaper per output token ($3.50/1M vs $3.75/1M); Gemini 3.8 Flash offers the longer context window (1M vs 262K tokens); and Qwen3.5 397B A17B ships open weights.

Which should you choose?

Choose Gemini 3.8 Flash if…

  • you want the stronger overall ModelCap Index position — #11 against #28 (76.4 vs 62.5 points).
  • you need the longer context window — 1M tokens against 262K.
  • AA Intelligence Index is your yardstick — 58.7 against 34.3.
  • AA Terminal-Bench 2.1 is your yardstick — 87.6% against 51.3%.
  • AA Humanity's Last Exam is your yardstick — 47.8% against 29.0%.
  • you want the more recently listed model — Gemini 3.8 Flash was listed 2 September 2026, Qwen3.5 397B A17B 16 February 2026.

Choose Qwen3.5 397B A17B if…

  • API cost matters — $3.50/1M output tokens against $3.75/1M.
  • your workload is prompt-heavy — input tokens cost $0.55/1M against $0.75/1M.
  • you want to self-host: Qwen3.5 397B A17B ships open weights while Gemini 3.8 Flash is api only.
  • you want provider choice — 10 listed API providers against 2.

Gemini 3.8 Flash vs Qwen3.5 397B A17B: specs, pricing and context

Specification comparison of Gemini 3.8 Flash and Qwen3.5 397B A17B
FieldGemini 3.8 FlashGoogleQwen3.5 397B A17BQwen
ModelCap Index position#11#28
Index score76.462.5
EvidenceMeasuredMeasured
Input price / 1M tokens$0.75$0.55
Output price / 1M tokens$3.75$3.50
Context window1M tokens262K tokens
Max output tokens66K236K
API providers listed210
Weight accessAPI onlyOpen weights
Input modalitiesText, Image, Video, File, AudioText, Image, Video
First listed2 September 202616 February 2026
PublisherGoogleQwen

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: Gemini 3.8 Flash vs Qwen3.5 397B A17B

Public benchmark boards where Gemini 3.8 Flash or Qwen3.5 397B A17B has a published result
BoardGemini 3.8 FlashQwen3.5 397B A17BLeads
Arena codingArena (LMArena)—14911486–1496Only one result
AA Intelligence IndexArtificial Analysis58.7intelligence-index34.3intelligence-indexGemini 3.8 Flash
AA Terminal-Bench 2.1Artificial Analysis87.6%terminal-bench-2.151.3%terminal-bench-2.1Gemini 3.8 Flash
AA τ²-Bench TelecomArtificial Analysis—95.6%tau2-bench-telecomOnly one result
AA Humanity's Last ExamArtificial Analysis47.8%humanitys-last-exam29.0%humanitys-last-examGemini 3.8 Flash

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.

Gemini 3.8 Flash vs Qwen3.5 397B A17B: common questions

Is Gemini 3.8 Flash better than Qwen3.5 397B A17B?

Gemini 3.8 Flash ranks higher on the ModelCap Index as of 3 September 2026: #11 against #28. 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.

Is Gemini 3.8 Flash cheaper than Qwen3.5 397B A17B?

Qwen3.5 397B A17B is cheaper on output tokens: $3.50/1M against $3.75/1M. Input tokens are $0.75/1M for Gemini 3.8 Flash and $0.55/1M for Qwen3.5 397B A17B. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, Gemini 3.8 Flash or Qwen3.5 397B A17B?

Gemini 3.8 Flash has the larger context window: 1M tokens against 262K.

Which is better for coding, Gemini 3.8 Flash or Qwen3.5 397B A17B?

AA Terminal-Bench 2.1: Gemini 3.8 Flash 87.6%, Qwen3.5 397B A17B 51.3% — Gemini 3.8 Flash leads.

Are Gemini 3.8 Flash and Qwen3.5 397B A17B open-weight models?

Gemini 3.8 Flash: API only. Qwen3.5 397B A17B: Open weights. 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 Gemini 3.8 Flash and Qwen3.5 397B A17B?

ModelCap currently lists 2 API providers for Gemini 3.8 Flash and 10 for Qwen3.5 397B A17B, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Gemini 3.8 Flash vs Qwen3.5 397B A17B comparison?

Every figure comes from the sealed ModelCap dataset published 3 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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