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Comparison · 2 models · Updated Oct 4, 2026

Gemini 2.5 Computer Use Preview vs Grok 4.1 Fast

Grok 4.1 Fast comes out ahead, 71 to 35 on our weighted score, and it is the cheaper option too.

  1. Google

    Gemini 2.5 Computer Use Preview

    Released Oct 7, 2025

    35/100
    • ECI—
    • Price$1.25 / $10.00
    • Context128K
    Full specs Remove Gemini 2.5 Computer Use Preview
  2. Our pick

    xAI

    Grok 4.1 Fast

    Released Nov 19, 2025

    71/100
    • ECI—
    • Price$0.20 / $0.50
    • Context2M
    Full specs Remove Grok 4.1 Fast

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Grok 4.1 Fast is our pick

Grok 4.1 Fast is the better all-round choice, scoring 71/100 against Gemini 2.5 Computer Use Preview (35). It leads on price and 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 priceGrok 4.1 FastGrok 4.1 Fast $0.275 · Gemini 2.5 Computer Use Preview $3.44 per 1M tokens (3:1 blend)
  • Longest contextGrok 4.1 FastGrok 4.1 Fast 2,000,000 · Gemini 2.5 Computer Use Preview 128,000 tokens
  • Widest inputsSame inputsGemini 2.5 Computer Use Preview: Text, Images · Grok 4.1 Fast: Text, Images
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightGemini 2.5 Computer Use PreviewGrok 4.1 Fast
Price50%2476
Inputs & features30%6060
Context window20%2472
Overall100%35/10071/100

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.

Gemini 2.5 Computer Use Preview vs Grok 4.1 Fast specifications side by side
SpecificationGemini 2.5 Computer Use PreviewGoogleGrok 4.1 FastxAI
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$1.25$0.20 (best)
Output$10.00$0.50 (best)
Cached input——
Blended (3:1)$3.44$0.275 (best)
Long-context rateOver 200K: $2.50 / $15.00Same rate
Price sourceOfficial Google APIMedian of 2 providers
Limits
Context window128,000 tokens2,000,000 tokens (best)
Max output64,000 tokens (best)30,000 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesNo
Tool callingYesYes
Structured outputNoYes
Availability
WeightsProprietaryProprietary
API model IDgemini-2.5-computer-use-preview-10-2025—
API providers22
ReleasedOct 7, 2025Nov 19, 2025
Knowledge cutoffJan 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.

  • Gemini 2.5 Computer Use Preview$32.50
  • Grok 4.1 Fast$3.00
04 — Questions

Which should you choose?

Which is better: Gemini 2.5 Computer Use Preview or Grok 4.1 Fast?

Grok 4.1 Fast is the better all-round choice, scoring 71/100 against Gemini 2.5 Computer Use Preview (35). It leads on price and 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, Gemini 2.5 Computer Use Preview or Grok 4.1 Fast?

Grok 4.1 Fast is cheaper at $0.20 input / $0.50 output per million tokens (median across 2 API providers). Gemini 2.5 Computer Use Preview 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 $0.275 per million tokens for Grok 4.1 Fast versus $3.44 for Gemini 2.5 Computer Use Preview (12× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Gemini 2.5 Computer Use Preview has not been scored yet and Grok 4.1 Fast has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Gemini 2.5 Computer Use Preview and Grok 4.1 Fast 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?

Grok 4.1 Fast has the largest context window at 2,000,000 tokens, against 128,000 for Gemini 2.5 Computer Use Preview. Maximum output per response: Gemini 2.5 Computer Use Preview up to 64,000, Grok 4.1 Fast up to 30,000 tokens.

Which can read images, PDFs, audio or video?

Gemini 2.5 Computer Use Preview accepts text and images; Grok 4.1 Fast accepts text and images. They handle the same number of input types.

Are any of these open source?

No. Gemini 2.5 Computer Use Preview and Grok 4.1 Fast are proprietary and only available through APIs and apps.

Which is newer?

Grok 4.1 Fast is the newest, released Nov 19, 2025. Gemini 2.5 Computer Use Preview came out Oct 7, 2025. Knowledge cutoff: Gemini 2.5 Computer Use 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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