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Comparison · 2 models · Updated Oct 4, 2026

Qwen3.5 397B-A17B vs Qwen3.7 Plus

Qwen3.7 Plus comes out ahead, 70 to 65 on our weighted score, and it is the cheaper option too.

  1. Alibaba (Qwen)

    Qwen3.5 397B-A17B

    Released Feb 15, 2026

    65/100
    • ECI146.7
    • Price$0.60 / $3.60
    • Context262K
    Full specs Remove Qwen3.5 397B-A17B
  2. Our pick

    Alibaba (Qwen)

    Qwen3.7 Plus

    Released Jun 2, 2026

    70/100
    • ECI147.4
    • Price$0.40 / $1.60
    • Context1M
    Full specs Remove Qwen3.7 Plus

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Qwen3.7 Plus is our pick

Qwen3.7 Plus is the better all-round choice, scoring 70/100 against Qwen3.5 397B-A17B (65). It leads on price and context window. Qwen3.5 397B-A17B wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityQwen3.7 PlusCapabilities Index (ECI): Qwen3.7 Plus 147.4 · Qwen3.5 397B-A17B 146.7
  • Lowest priceQwen3.7 PlusQwen3.7 Plus $0.70 · Qwen3.5 397B-A17B $1.35 per 1M tokens (3:1 blend)
  • Longest contextQwen3.7 PlusQwen3.7 Plus 1,000,000 · Qwen3.5 397B-A17B 262,144 tokens
  • Widest inputsQwen3.5 397B-A17BQwen3.5 397B-A17B: Text, Images, Audio, Video · Qwen3.7 Plus: Text, Images, Video
  • Self-hostingQwen3.5 397B-A17BPublishes downloadable weights
How the score is built
MeasureWeightQwen3.5 397B-A17BQwen3.7 Plus
CapabilityCapabilities Index (ECI)50%7475
Price25%4457
Inputs & features15%9080
Context window10%3760
Overall100%65/10070/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Qwen3.5 397B-A17B vs Qwen3.7 Plus specifications side by side
SpecificationQwen3.5 397B-A17BAlibaba (Qwen)Qwen3.7 PlusAlibaba (Qwen)
Capability
Capabilities Index (ECI)146.7147.4 (best)
ECI rank#67 of 148#61 of 148 (best)
GPQA DiamondGraduate-level science questions86.4%87.9% (best)
FrontierMath Tiers 1–3Research-level mathematics31.2%34.4% (best)
OTIS Mock AIME 2024–2025Competition mathematics88.9%93.3% (best)
Price per million tokens
Input$0.60$0.40 (best)
Output$3.60$1.60 (best)
Cached input—$0.04
Blended (3:1)$1.35$0.70 (best)
Long-context rateSame rateOver 256K: $1.20 / $4.80
Price sourceOfficial Alibaba APIOfficial Alibaba API
Limits
Context window262,144 tokens1,000,000 tokens (best)
Max output65,536 tokens (best)64,000 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioYesNo
VideoYesYes
ReasoningYesYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsOpenProprietary
API model IDqwen3.5-397b-a17bqwen3.7-plus
API providers2325 (best)
ReleasedFeb 15, 2026Jun 2, 2026
Knowledge cutoff—Apr 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Qwen3.5 397B-A17B$13.20
  • Qwen3.7 Plus$7.20
04 — Questions

Which should you choose?

Which is better: Qwen3.5 397B-A17B or Qwen3.7 Plus?

Qwen3.7 Plus is the better all-round choice, scoring 70/100 against Qwen3.5 397B-A17B (65). It leads on price and context window. Qwen3.5 397B-A17B wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Qwen3.5 397B-A17B or Qwen3.7 Plus?

Qwen3.7 Plus is cheaper at $0.40 input / $1.60 output per million tokens (official Alibaba API price). Qwen3.5 397B-A17B costs $0.60 input / $3.60 output per million tokens (official Alibaba API price). At a typical mix of three input tokens to one output token, that is $0.70 per million tokens for Qwen3.7 Plus versus $1.35 for Qwen3.5 397B-A17B (1.9× as much).

Which scores higher on benchmarks?

Qwen3.7 Plus scores higher on the Capabilities Index (ECI): Qwen3.7 Plus 147.4 (#61 of 148) and Qwen3.5 397B-A17B 146.7 (#67 of 148). The confidence ranges of the top two overlap (145.7–148.9 vs 144.8–148.2), so treat the gap as small. On individual benchmarks: GPQA Diamond — Qwen3.7 Plus 87.9%, Qwen3.5 397B-A17B 86.4%; FrontierMath Tiers 1–3 — Qwen3.7 Plus 34.4%, Qwen3.5 397B-A17B 31.2%; OTIS Mock AIME 2024–2025 — Qwen3.7 Plus 93.3%, Qwen3.5 397B-A17B 88.9%.

Which is better for coding?

There are no published SWE-bench Verified results for Qwen3.5 397B-A17B and Qwen3.7 Plus yet, so there is no like-for-like coding score. On overall capability, Qwen3.7 Plus leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Qwen3.7 Plus has the largest context window at 1,000,000 tokens, against 262,144 for Qwen3.5 397B-A17B. Maximum output per response: Qwen3.5 397B-A17B up to 65,536, Qwen3.7 Plus up to 64,000 tokens.

Which can read images, PDFs, audio or video?

Qwen3.5 397B-A17B accepts text, images, audio and video; Qwen3.7 Plus accepts text, images and video. Qwen3.5 397B-A17B handles the widest range of inputs.

Are any of these open source?

Qwen3.5 397B-A17B publishes its weights and can be self-hosted; Qwen3.7 Plus is proprietary.

Which is newer?

Qwen3.7 Plus is the newest, released Jun 2, 2026. Qwen3.5 397B-A17B came out Feb 15, 2026. Knowledge cutoff: Qwen3.7 Plus Apr 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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