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Comparison · 2 models · Updated Oct 4, 2026

GPT-5.4 mini vs Gemini 3 Pro Preview

Gemini 3 Pro Preview comes out ahead, 67 to 63 on our weighted score, though GPT-5.4 mini is 2.7× cheaper per token.

  1. OpenAI

    GPT-5.4 mini

    Released Mar 17, 2026

    63/100
    • ECI148.8
    • Price$0.75 / $4.50
    • Context400K
    Full specs Remove GPT-5.4 mini
  2. Our pick

    Google

    Gemini 3 Pro Preview

    Released Nov 18, 2025

    67/100
    • ECI153.0
    • Price$2.00 / $12.00
    • Context1.05M
    Full specs Remove Gemini 3 Pro Preview

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemini 3 Pro Preview is our pick

Gemini 3 Pro Preview is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63). It leads on capability, inputs & features and context window. GPT-5.4 mini wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityGemini 3 Pro PreviewCapabilities Index (ECI): Gemini 3 Pro Preview 153.0 · GPT-5.4 mini 148.8
  • Lowest priceGPT-5.4 miniGPT-5.4 mini $1.69 · Gemini 3 Pro Preview $4.50 per 1M tokens (3:1 blend)
  • Longest contextGemini 3 Pro PreviewGemini 3 Pro Preview 1,048,576 · GPT-5.4 mini 400,000 tokens
  • Widest inputsGemini 3 Pro PreviewGPT-5.4 mini: Text, Images · Gemini 3 Pro Preview: Text, Images, PDFs, Audio, Video
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightGPT-5.4 miniGemini 3 Pro Preview
CapabilityCapabilities Index (ECI)50%7782
Price25%3919
Inputs & features15%70100
Context window10%4461
Overall100%63/10067/100
02 — Side by side

Every spec in one table

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

GPT-5.4 mini vs Gemini 3 Pro Preview specifications side by side
SpecificationGPT-5.4 miniOpenAIGemini 3 Pro PreviewGoogle
Capability
Capabilities Index (ECI)148.8153.0 (best)
ECI rank#56 of 148#39 of 148 (best)
GPQA DiamondGraduate-level science questions86.9%92.6% (best)
FrontierMath Tiers 1–3Research-level mathematics51.2%—
OTIS Mock AIME 2024–2025Competition mathematics88.9%91.4% (best)
SWE-bench VerifiedFixing real GitHub issues—72.9%
SimpleQA VerifiedShort factual questions29.4%—
Price per million tokens
Input$0.75 (best)$2.00
Output$4.50 (best)$12.00
Cached input$0.075—
Blended (3:1)$1.69 (best)$4.50
Long-context rateSame rateSame rate
Price sourceOfficial OpenAI APIMedian of 2 providers
Limits
Context window400,000 tokens1,048,576 tokens (best)
Max output128,000 tokens (best)65,536 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoYes
AudioNoYes
VideoNoYes
ReasoningYeslow · medium · high · xhighYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryProprietary
API model IDgpt-5.4-mini—
API providers29 (best)3
ReleasedMar 17, 2026Nov 18, 2025
Knowledge cutoffAug 31, 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.

  • GPT-5.4 mini$16.50
  • Gemini 3 Pro Preview$44.00
04 — Questions

Which should you choose?

Which is better: GPT-5.4 mini or Gemini 3 Pro Preview?

Gemini 3 Pro Preview is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63). It leads on capability, inputs & features and context window. GPT-5.4 mini wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, GPT-5.4 mini or Gemini 3 Pro Preview?

GPT-5.4 mini is cheaper at $0.75 input / $4.50 output per million tokens (official OpenAI API price). Gemini 3 Pro Preview costs $2.00 input / $12.00 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $1.69 per million tokens for GPT-5.4 mini versus $4.50 for Gemini 3 Pro Preview (2.7× as much).

Which scores higher on benchmarks?

Gemini 3 Pro Preview scores higher on the Capabilities Index (ECI): Gemini 3 Pro Preview 153.0 (#39 of 148) and GPT-5.4 mini 148.8 (#56 of 148). Their confidence ranges do not overlap (150.6–155.2 vs 147.1–150.5), so the gap is a real one. On individual benchmarks: GPQA Diamond — Gemini 3 Pro Preview 92.6%, GPT-5.4 mini 86.9%; OTIS Mock AIME 2024–2025 — Gemini 3 Pro Preview 91.4%, GPT-5.4 mini 88.9%.

Which is better for coding?

There are no published SWE-bench Verified results for GPT-5.4 mini yet, so there is no like-for-like coding score. On overall capability, Gemini 3 Pro Preview 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 3 Pro Preview has the largest context window at 1,048,576 tokens, against 400,000 for GPT-5.4 mini. Maximum output per response: GPT-5.4 mini up to 128,000, Gemini 3 Pro Preview up to 65,536 tokens.

Which can read images, PDFs, audio or video?

GPT-5.4 mini accepts text and images; Gemini 3 Pro Preview accepts text, images, PDFs, audio and video. Gemini 3 Pro Preview handles the widest range of inputs.

Are any of these open source?

No. GPT-5.4 mini and Gemini 3 Pro Preview are proprietary and only available through APIs and apps.

Which is newer?

GPT-5.4 mini is the newest, released Mar 17, 2026. Gemini 3 Pro Preview came out Nov 18, 2025. Knowledge cutoff: GPT-5.4 mini Aug 31, 2025, Gemini 3 Pro Preview 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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