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Comparison · 2 models · Updated Oct 4, 2026

Gemini 2.5 Computer Use Preview vs GPT-5.3 Codex Spark

Too close to call on our weighted score (GPT-5.3 Codex Spark 38, Gemini 2.5 Computer Use Preview 35). The right pick depends on what you value most.

  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. OpenAI

    GPT-5.3 Codex Spark

    Released Feb 5, 2026

    38/100
    • ECI—
    • Price$1.75 / $14.00
    • Context128K
    Full specs Remove GPT-5.3 Codex Spark

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Too close to call

It is close. Our weighted score puts them within 3 points (GPT-5.3 Codex Spark 38/100, Gemini 2.5 Computer Use Preview 35/100), so choose by what matters most for your work: Gemini 2.5 Computer Use Preview on price. 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 priceGemini 2.5 Computer Use PreviewGemini 2.5 Computer Use Preview $3.44 · GPT-5.3 Codex Spark $4.81 per 1M tokens (3:1 blend)
  • Longest contextAbout the sameGemini 2.5 Computer Use Preview 128,000 · GPT-5.3 Codex Spark 128,000 tokens
  • Widest inputsGPT-5.3 Codex SparkGemini 2.5 Computer Use Preview: Text, Images · GPT-5.3 Codex Spark: Text, Images, PDFs
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightGemini 2.5 Computer Use PreviewGPT-5.3 Codex Spark
Price50%2418
Inputs & features30%6080
Context window20%2424
Overall100%35/10038/100

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 GPT-5.3 Codex Spark specifications side by side
SpecificationGemini 2.5 Computer Use PreviewGoogleGPT-5.3 Codex SparkOpenAI
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$1.25 (best)$1.75
Output$10.00 (best)$14.00
Cached input—$0.175
Blended (3:1)$3.44 (best)$4.81
Long-context rateOver 200K: $2.50 / $15.00Same rate
Price sourceOfficial Google APIOfficial OpenAI API
Limits
Context window128,000 tokens128,000 tokens
Max output64,000 tokens (best)32,000 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoYes
AudioNoNo
VideoNoNo
ReasoningYesYeslow · medium · high · xhigh
Tool callingYesYes
Structured outputNoYes
Availability
WeightsProprietaryProprietary
API model IDgemini-2.5-computer-use-preview-10-2025gpt-5.3-codex-spark
API providers2 (best)1
ReleasedOct 7, 2025Feb 5, 2026
Knowledge cutoffJan 2025Aug 31, 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
  • GPT-5.3 Codex Spark$45.50
04 — Questions

Which should you choose?

Which is better: Gemini 2.5 Computer Use Preview or GPT-5.3 Codex Spark?

It is close. Our weighted score puts them within 3 points (GPT-5.3 Codex Spark 38/100, Gemini 2.5 Computer Use Preview 35/100), so choose by what matters most for your work: Gemini 2.5 Computer Use Preview on price. 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 GPT-5.3 Codex Spark?

Gemini 2.5 Computer Use Preview is cheaper at $1.25 input / $10.00 output per million tokens (official Google API price). GPT-5.3 Codex Spark costs $1.75 input / $14.00 output per million tokens (official OpenAI API price). At a typical mix of three input tokens to one output token, that is $3.44 per million tokens for Gemini 2.5 Computer Use Preview versus $4.81 for GPT-5.3 Codex Spark (1.4× 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 GPT-5.3 Codex Spark 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 GPT-5.3 Codex Spark 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?

Gemini 2.5 Computer Use Preview and GPT-5.3 Codex Spark share the same 128,000-token context window. Maximum output per response: Gemini 2.5 Computer Use Preview up to 64,000, GPT-5.3 Codex Spark up to 32,000 tokens.

Which can read images, PDFs, audio or video?

Gemini 2.5 Computer Use Preview accepts text and images; GPT-5.3 Codex Spark accepts text, images and PDFs. GPT-5.3 Codex Spark handles the widest range of inputs.

Are any of these open source?

No. Gemini 2.5 Computer Use Preview and GPT-5.3 Codex Spark are proprietary and only available through APIs and apps.

Which is newer?

GPT-5.3 Codex Spark is the newest, released Feb 5, 2026. Gemini 2.5 Computer Use Preview came out Oct 7, 2025. Knowledge cutoff: Gemini 2.5 Computer Use Preview Jan 2025, GPT-5.3 Codex Spark Aug 31, 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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