ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Gemma 4 31B IT vs GPT-5.6 Cyber

Gemma 4 31B IT comes out ahead, 70 to 30 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Google

    Gemma 4 31B IT

    Released Apr 2, 2026

    70/100
    • ECI142.8
    • Price$0.14 / $0.40
    • Context262K
  2. OpenAI

    GPT-5.6 Cyber

    Released Aug 7, 2026

    30/100
    • ECI—
    • Price$12.50 / $75.00
    • Context400K
  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemma 4 31B IT is our pick

Gemma 4 31B IT is the better all-round choice, scoring 70/100 against GPT-5.6 Cyber (30). It leads on price. GPT-5.6 Cyber wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceGemma 4 31B ITGemma 4 31B IT $0.205 · GPT-5.6 Cyber $28.13 per 1M tokens (3:1 blend)
  • Longest contextGPT-5.6 CyberGPT-5.6 Cyber 400,000 · Gemma 4 31B IT 262,144 tokens
  • Widest inputsSame inputsGemma 4 31B IT: Text, Images · GPT-5.6 Cyber: Text, Images
  • Self-hostingGemma 4 31B ITPublishes downloadable weights
How the score is built
MeasureWeightGemma 4 31B ITGPT-5.6 Cyber
Price50%830
Inputs & features30%7070
Context window20%3744
Overall100%70/10030/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

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

Gemma 4 31B IT vs GPT-5.6 Cyber specifications side by side
SpecificationGemma 4 31B ITGoogleGPT-5.6 CyberOpenAI
Capability
Capabilities Index (ECI)142.8—
ECI rank#86 of 148—
GPQA DiamondGraduate-level science questions75.8%—
OTIS Mock AIME 2024–2025Competition mathematics73.3%—
SimpleQA VerifiedShort factual questions10.4%—
Price per million tokens
Input$0.14 (best)$12.50
Output$0.40 (best)$75.00
Cached input—$1.25
Blended (3:1)$0.205 (best)$28.13
Long-context rateSame rateSame rate
Price sourceMedian of 30 providersOfficial OpenAI API
Limits
Context window262,144 tokens400,000 tokens (best)
Max output32,768 tokens128,000 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesYeslow · medium · high · xhigh · max
Tool callingYesYes
Structured outputYesYes
Availability
WeightsOpenProprietary
API model IDgemma-4-31b-itgpt-daybreak-red-latest
API providers38 (best)1
ReleasedApr 2, 2026Aug 7, 2026
Knowledge cutoff—Feb 16, 2026
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.

  • Gemma 4 31B IT$2.20
  • GPT-5.6 Cyber$275.00
04 — Questions

Which should you choose?

Which is better: Gemma 4 31B IT or GPT-5.6 Cyber?

Gemma 4 31B IT is the better all-round choice, scoring 70/100 against GPT-5.6 Cyber (30). It leads on price. GPT-5.6 Cyber wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, Gemma 4 31B IT or GPT-5.6 Cyber?

Gemma 4 31B IT is cheaper at $0.14 input / $0.40 output per million tokens (median across 30 API providers). GPT-5.6 Cyber costs $12.50 input / $75.00 output per million tokens (official OpenAI API price). At a typical mix of three input tokens to one output token, that is $0.205 per million tokens for Gemma 4 31B IT versus $28.13 for GPT-5.6 Cyber (137× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Gemma 4 31B IT has an ECI of 142.8 and GPT-5.6 Cyber has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Gemma 4 31B IT and GPT-5.6 Cyber yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

GPT-5.6 Cyber has the largest context window at 400,000 tokens, against 262,144 for Gemma 4 31B IT. Maximum output per response: Gemma 4 31B IT up to 32,768, GPT-5.6 Cyber up to 128,000 tokens.

Which can read images, PDFs, audio or video?

Gemma 4 31B IT accepts text and images; GPT-5.6 Cyber accepts text and images. They handle the same number of input types.

Are any of these open source?

Gemma 4 31B IT publishes its weights and can be self-hosted; GPT-5.6 Cyber is proprietary.

Which is newer?

GPT-5.6 Cyber is the newest, released Aug 7, 2026. Gemma 4 31B IT came out Apr 2, 2026. Knowledge cutoff: GPT-5.6 Cyber Feb 16, 2026.

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.