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Comparison · 2 models · Updated Nov 2, 2026

Gemma 4 26B A4B IT vs GPT OSS 120B

Gemma 4 26B A4B IT comes out ahead, 68 to 58 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Google

    Gemma 4 26B A4B IT

    Released Apr 2, 2026

    68/100
    • ECI142.0
    • Price$0.112 / $0.40
    • Context262K
    Full specs Remove Gemma 4 26B A4B IT

  2. OpenAI

    GPT OSS 120B

    Released Aug 5, 2025

    58/100
    • ECI139.8
    • Price$0.15 / $0.60
    • Context131K
    Full specs Remove GPT OSS 120B

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemma 4 26B A4B IT is our pick

Gemma 4 26B A4B IT is the better all-round choice, scoring 68/100 against GPT OSS 120B (58). It leads on capability, price, inputs & features and context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityGemma 4 26B A4B ITCapabilities Index (ECI): Gemma 4 26B A4B IT 142.0 · GPT OSS 120B 139.8
  • Lowest priceGemma 4 26B A4B ITGemma 4 26B A4B IT $0.184 · GPT OSS 120B $0.263 per 1M tokens (3:1 blend)
  • Longest contextGemma 4 26B A4B ITGemma 4 26B A4B IT 262,144 · GPT OSS 120B 131,072 tokens
  • Widest inputsGemma 4 26B A4B ITGemma 4 26B A4B IT: Text, Images · GPT OSS 120B: Text
  • Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
How the score is built
MeasureWeightGemma 4 26B A4B ITGPT OSS 120B
CapabilityCapabilities Index (ECI)50%6764
Price25%8174
Inputs & features15%7035
Context window10%3725
Overall100%68/10058/100
02 — Side by side

Every spec in one table

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

Gemma 4 26B A4B IT vs GPT OSS 120B specifications side by side
SpecificationGemma 4 26B A4B ITGoogleGPT OSS 120BOpenAI
Capability
Capabilities Index (ECI)142.0 (best)139.8
ECI rank#103 of 165 (best)#114 of 165
GPQA DiamondGraduate-level science questions73.2%75.8% (best)
OTIS Mock AIME 2024–2025Competition mathematics82.2%88.9% (best)
Price per million tokens
Input$0.112 (best)$0.15
Output$0.40 (best)$0.60
Cached input——
Blended (3:1)$0.184 (best)$0.263
Long-context rateSame rateSame rate
Price sourceMedian of 26 providersMedian of 65 providers
Limits
Context window262,144 tokens (best)131,072 tokens
Max output32,768 tokens32,768 tokens
Inputs and features
TextYesYes
ImagesYesNo
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesYes
Tool callingYesYes
Structured outputYesNo
Availability
WeightsOpenOpen
API model IDgemma-4-26b-a4b-it—
API providers2967 (best)
ReleasedApr 2, 2026Aug 5, 2025
Knowledge cutoff—Jun 2024
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 26B A4B IT$1.92
  • GPT OSS 120B$2.70
04 — Questions

Which should you choose?

Which is better: Gemma 4 26B A4B IT or GPT OSS 120B?

Gemma 4 26B A4B IT is the better all-round choice, scoring 68/100 against GPT OSS 120B (58). It leads on capability, price, inputs & features and context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Gemma 4 26B A4B IT or GPT OSS 120B?

Gemma 4 26B A4B IT is cheaper at $0.112 input / $0.40 output per million tokens (median across 26 API providers). GPT OSS 120B costs $0.15 input / $0.60 output per million tokens (median across 65 API providers). At a typical mix of three input tokens to one output token, that is $0.184 per million tokens for Gemma 4 26B A4B IT versus $0.263 for GPT OSS 120B (1.4× as much).

Which scores higher on benchmarks?

Gemma 4 26B A4B IT scores higher on the Capabilities Index (ECI): Gemma 4 26B A4B IT 142.0 (#103 of 165) and GPT OSS 120B 139.8 (#114 of 165). The confidence ranges of the top two overlap (139.0–143.7 vs 135.6–142.2), so treat the gap as small. On individual benchmarks: GPQA Diamond — GPT OSS 120B 75.8%, Gemma 4 26B A4B IT 73.2%; OTIS Mock AIME 2024–2025 — GPT OSS 120B 88.9%, Gemma 4 26B A4B IT 82.2%.

Which is better for coding?

There are no published SWE-bench Verified results for Gemma 4 26B A4B IT and GPT OSS 120B yet, so there is no like-for-like coding score. On overall capability, Gemma 4 26B A4B IT 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?

Gemma 4 26B A4B IT has the largest context window at 262,144 tokens, against 131,072 for GPT OSS 120B. Maximum output per response: Gemma 4 26B A4B IT up to 32,768, GPT OSS 120B up to 32,768 tokens.

Which can read images, PDFs, audio or video?

Gemma 4 26B A4B IT accepts text and images; GPT OSS 120B accepts text. Gemma 4 26B A4B IT handles the widest range of inputs.

Are any of these open source?

Yes, both publish their weights, so you can self-host them.

Which is newer?

Gemma 4 26B A4B IT is the newest, released Apr 2, 2026. GPT OSS 120B came out Aug 5, 2025. Knowledge cutoff: GPT OSS 120B Jun 2024.

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 Nov 2, 2026.

05 — Keep comparing

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