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Head-to-head comparison

GPT-5.2 Chat vs Qwen3.5 397B A17B

GPT-5.2 Chat (OpenAI) 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 17 August 2026

As of 17 August 2026, GPT-5.2 Chat holds the stronger ModelCap Index position (#9 vs #27); Qwen3.5 397B A17B is 6× cheaper per output token ($2.34/1M vs $14.00/1M); Qwen3.5 397B A17B offers the longer context window (262K vs 128K tokens); and Qwen3.5 397B A17B ships open weights.

Which should you choose?

Choose GPT-5.2 Chat if…

  • you want the stronger overall ModelCap Index position — #9 against #27 (74.9 vs 62.3 points).
  • Arena coding is your yardstick — 1515 against 1491.

Choose Qwen3.5 397B A17B if…

  • API cost matters — $2.34/1M output tokens against $14.00/1M, about 6× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.39/1M against $1.75/1M.
  • you need the longer context window — 262K tokens against 128K.
  • you want to self-host: Qwen3.5 397B A17B ships open weights while GPT-5.2 Chat is api only.
  • you want provider choice — 11 listed API providers against 1.
  • you want the more recently listed model — Qwen3.5 397B A17B was listed 16 February 2026, GPT-5.2 Chat 10 December 2025.

GPT-5.2 Chat vs Qwen3.5 397B A17B: specs, pricing and context

Specification comparison of GPT-5.2 Chat and Qwen3.5 397B A17B
FieldGPT-5.2 ChatOpenAIQwen3.5 397B A17BQwen
ModelCap Index position#9#27
Index score74.962.3
EvidenceMeasuredMeasured
Input price / 1M tokens$1.75$0.39
Output price / 1M tokens$14.00$2.34
Context window128K tokens262K tokens
Max output tokens32K66K
API providers listed111
Weight accessAPI onlyOpen weights
Input modalitiesFile, Image, TextText, Image, Video
First listed10 December 202516 February 2026
PublisherOpenAIQwen

Evidence: 2 public benchmark observations across 2 boards · 3 public benchmark observations across 3 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: GPT-5.2 Chat vs Qwen3.5 397B A17B

Public benchmark boards where GPT-5.2 Chat or Qwen3.5 397B A17B has a published result
BoardGPT-5.2 ChatQwen3.5 397B A17BLeads
Arena codingArena (LMArena)15151508–152214911486–1497GPT-5.2 Chat
Artificial Analysis Intelligence IndexArtificial Analysis—34.3intelligence-indexOnly 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.

GPT-5.2 Chat vs Qwen3.5 397B A17B: common questions

Is GPT-5.2 Chat better than Qwen3.5 397B A17B?

GPT-5.2 Chat ranks higher on the ModelCap Index as of 17 August 2026: #9 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.

Is GPT-5.2 Chat cheaper than Qwen3.5 397B A17B?

Qwen3.5 397B A17B is cheaper on output tokens: $2.34/1M against $14.00/1M. Input tokens are $1.75/1M for GPT-5.2 Chat and $0.39/1M 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, GPT-5.2 Chat or Qwen3.5 397B A17B?

Qwen3.5 397B A17B has the larger context window: 262K tokens against 128K.

Which is better for coding, GPT-5.2 Chat or Qwen3.5 397B A17B?

Arena coding: GPT-5.2 Chat 1515, Qwen3.5 397B A17B 1491 — GPT-5.2 Chat leads.

Are GPT-5.2 Chat and Qwen3.5 397B A17B open-weight models?

GPT-5.2 Chat: 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 GPT-5.2 Chat and Qwen3.5 397B A17B?

ModelCap currently lists 1 API provider for GPT-5.2 Chat and 11 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 GPT-5.2 Chat vs Qwen3.5 397B A17B comparison?

Every figure comes from the sealed ModelCap dataset published 17 August 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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