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Head-to-head comparison

Claude Sonnet 5 vs Qwen3.7 Plus

Claude Sonnet 5 (Anthropic) and Qwen3.7 Plus (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 22 September 2026

As of 22 September 2026, Claude Sonnet 5 holds the stronger ModelCap Index position (#26 vs #30); and Qwen3.7 Plus is 7.8× cheaper per output token ($1.28/1M vs $10.00/1M).

Which should you choose?

Choose Claude Sonnet 5 if…

  • you want the stronger overall ModelCap Index position — #26 against #30 (78.5 vs 73.4 points).
  • you want provider choice — 5 listed API providers against 1.
  • Arena coding is your yardstick — 1520 against 1501.
  • LMArena Agent is your yardstick — 6.0% against -6.1%.
  • AA Intelligence Index is your yardstick — 38.2 against 25.2.
  • AA Humanity's Last Exam is your yardstick — 41.3% against 35.6%.
  • you want the more recently listed model — Claude Sonnet 5 was listed 30 June 2026, Qwen3.7 Plus 3 June 2026.

Choose Qwen3.7 Plus if…

  • API cost matters — $1.28/1M output tokens against $10.00/1M, about 7.8× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.32/1M against $2.00/1M.

Claude Sonnet 5 vs Qwen3.7 Plus: specs, pricing and context

Specification comparison of Claude Sonnet 5 and Qwen3.7 Plus
FieldClaude Sonnet 5AnthropicQwen3.7 PlusQwen
ModelCap Index position#26#30
Index score78.573.4
EvidenceMeasuredMeasured
Input price / 1M tokens$2.00$0.32
Output price / 1M tokens$10.00$1.28
Context window1M tokens1M tokens
Max output tokens128K131K
API providers listed51
Weight accessAPI onlyAPI only
Input modalitiesText, Image, FileText, Image
First listed30 June 20263 June 2026
PublisherAnthropicQwen

Evidence: 4 public benchmark observations across 4 boards · 4 public benchmark observations across 4 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Claude Sonnet 5 vs Qwen3.7 Plus

Public benchmark boards where Claude Sonnet 5 or Qwen3.7 Plus has a published result
BoardClaude Sonnet 5Qwen3.7 PlusLeads
Arena codingArena (LMArena)15201513–1527High15011494–1508Claude Sonnet 5
LMArena AgentLMArena6.0%4.4%–7.6%High-6.1%-7.3%–-4.9%Claude Sonnet 5
AA Intelligence IndexArtificial Analysis38.2intelligence-index:v4.3:max25.2intelligence-index:v4.3:reasoning-unspecifiedClaude Sonnet 5
AA τ²-Bench TelecomArtificial Analysis—93.0%tau2:telecom:dual-control:pass-at-1:3-repeats:source-model="Qwen3.7 Plus":reasoning=trueOnly one result
AA Humanity's Last ExamArtificial Analysis41.3%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Claude Sonnet 5 (Adaptive Reasoning, Max Effort)":reasoning=true35.6%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Qwen3.7 Plus":reasoning=trueClaude Sonnet 5
Terminal-Bench 4.0Terminal-Bench (Laude Institute)12.4%9.4%–15.5%Claude Code · Max—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.

Claude Sonnet 5 vs Qwen3.7 Plus: common questions

Is Claude Sonnet 5 better than Qwen3.7 Plus?

Claude Sonnet 5 ranks higher on the ModelCap Index as of 22 September 2026: #26 against #30. 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 Claude Sonnet 5 cheaper than Qwen3.7 Plus?

Qwen3.7 Plus is cheaper on output tokens: $1.28/1M against $10.00/1M. Input tokens are $2.00/1M for Claude Sonnet 5 and $0.32/1M for Qwen3.7 Plus. 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 $9.00 for Claude Sonnet 5 versus $1.28 for Qwen3.7 Plus. Qwen3.7 Plus costs 85.8% 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, Claude Sonnet 5 or Qwen3.7 Plus?

Both publish a 1M-token context window.

Which is better for coding, Claude Sonnet 5 or Qwen3.7 Plus?

Arena coding: Claude Sonnet 5 1520, Qwen3.7 Plus 1501 — Claude Sonnet 5 leads.

Are Claude Sonnet 5 and Qwen3.7 Plus open-weight models?

Claude Sonnet 5: API only. Qwen3.7 Plus: 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 Claude Sonnet 5 and Qwen3.7 Plus?

ModelCap currently lists 5 API providers for Claude Sonnet 5 and 1 for Qwen3.7 Plus, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Claude Sonnet 5 vs Qwen3.7 Plus comparison?

Every figure comes from the sealed ModelCap dataset published 22 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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