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Comparison · 2 models · Updated Oct 4, 2026

Qwen3.5 Plus vs Gemini 2.5 Pro

Qwen3.5 Plus comes out ahead, 66 to 63 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Alibaba (Qwen)

    Qwen3.5 Plus

    Released Feb 16, 2026

    66/100
    • ECI146.8
    • Price$0.40 / $2.40
    • Context1M
    Full specs Remove Qwen3.5 Plus

  2. Google

    Gemini 2.5 Pro

    Released Jun 17, 2025

    63/100
    • ECI145.3
    • Price$1.25 / $10.00
    • Context1.05M
    Full specs Remove Gemini 2.5 Pro

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Qwen3.5 Plus is our pick

Qwen3.5 Plus is the better all-round choice, scoring 66/100 against Gemini 2.5 Pro (63). It leads on capability and price. Gemini 2.5 Pro wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityQwen3.5 PlusCapabilities Index (ECI): Qwen3.5 Plus 146.8 · Gemini 2.5 Pro 145.3
  • Lowest priceQwen3.5 PlusQwen3.5 Plus $0.90 · Gemini 2.5 Pro $3.44 per 1M tokens (3:1 blend)
  • Longest contextGemini 2.5 ProGemini 2.5 Pro 1,048,576 · Qwen3.5 Plus 1,000,000 tokens
  • Widest inputsGemini 2.5 ProQwen3.5 Plus: Text, Images, Video · Gemini 2.5 Pro: Text, Images, PDFs, Audio, Video
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightQwen3.5 PlusGemini 2.5 Pro
CapabilityCapabilities Index (ECI)50%7472
Price25%5224
Inputs & features15%70100
Context window10%6061
Overall100%66/10063/100
02 — Side by side

Every spec in one table

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

Qwen3.5 Plus vs Gemini 2.5 Pro specifications side by side
SpecificationQwen3.5 PlusAlibaba (Qwen)Gemini 2.5 ProGoogle
Capability
Capabilities Index (ECI)146.8 (best)145.3
ECI rank#65 of 148 (best)#78 of 148
GPQA DiamondGraduate-level science questions84.9%85.3% (best)
FrontierMath Tiers 1–3Research-level mathematics—24.6%
OTIS Mock AIME 2024–2025Competition mathematics86.7% (best)84.7%
SWE-bench VerifiedFixing real GitHub issues—57.6%
SimpleQA VerifiedShort factual questions25.4%—
Price per million tokens
Input$0.40 (best)$1.25
Output$2.40 (best)$10.00
Cached input—$0.125
Blended (3:1)$0.90 (best)$3.44
Long-context rateSame rateOver 200K: $2.50 / $15.00
Price sourceOfficial Alibaba APIOfficial Google API
Limits
Context window1,000,000 tokens1,048,576 tokens (best)
Max output65,536 tokens65,536 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoYes
AudioNoYes
VideoYesYes
ReasoningYesYes
Tool callingYesYes
Structured outputNoYes
Availability
WeightsProprietaryProprietary
API model IDqwen3.5-plusgemini-2.5-pro
API providers1022 (best)
ReleasedFeb 16, 2026Jun 17, 2025
Knowledge cutoffApr 2025Jan 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 Plus$8.80
  • Gemini 2.5 Pro$32.50
04 — Questions

Which should you choose?

Which is better: Qwen3.5 Plus or Gemini 2.5 Pro?

Qwen3.5 Plus is the better all-round choice, scoring 66/100 against Gemini 2.5 Pro (63). It leads on capability and price. Gemini 2.5 Pro wins on inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Qwen3.5 Plus or Gemini 2.5 Pro?

Qwen3.5 Plus is cheaper at $0.40 input / $2.40 output per million tokens (official Alibaba API price). Gemini 2.5 Pro costs $1.25 input / $10.00 output per million tokens (official Google API price). At a typical mix of three input tokens to one output token, that is $0.90 per million tokens for Qwen3.5 Plus versus $3.44 for Gemini 2.5 Pro (3.8× as much).

Which scores higher on benchmarks?

Qwen3.5 Plus scores higher on the Capabilities Index (ECI): Qwen3.5 Plus 146.8 (#65 of 148) and Gemini 2.5 Pro 145.3 (#78 of 148). The confidence ranges of the top two overlap (144.6–148.1 vs 143.6–146.9), so treat the gap as small. On individual benchmarks: GPQA Diamond — Gemini 2.5 Pro 85.3%, Qwen3.5 Plus 84.9%; OTIS Mock AIME 2024–2025 — Qwen3.5 Plus 86.7%, Gemini 2.5 Pro 84.7%.

Which is better for coding?

There are no published SWE-bench Verified results for Qwen3.5 Plus yet, so there is no like-for-like coding score. On overall capability, Qwen3.5 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?

Gemini 2.5 Pro has the largest context window at 1,048,576 tokens, against 1,000,000 for Qwen3.5 Plus. Maximum output per response: Qwen3.5 Plus up to 65,536, Gemini 2.5 Pro up to 65,536 tokens.

Which can read images, PDFs, audio or video?

Qwen3.5 Plus accepts text, images and video; Gemini 2.5 Pro accepts text, images, PDFs, audio and video. Gemini 2.5 Pro handles the widest range of inputs.

Are any of these open source?

No. Qwen3.5 Plus and Gemini 2.5 Pro are proprietary and only available through APIs and apps.

Which is newer?

Qwen3.5 Plus is the newest, released Feb 16, 2026. Gemini 2.5 Pro came out Jun 17, 2025. Knowledge cutoff: Qwen3.5 Plus Apr 2025, Gemini 2.5 Pro Jan 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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