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Comparison · 2 models · Updated Oct 4, 2026

Command A Plus vs GPT-5.3 Chat

Command A Plus comes out ahead, 35 to 32 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Cohere

    Command A Plus

    Released May 20, 2026

    35/100
    • ECI—
    • Price$2.50 / $10.00
    • Context128K
    Full specs Remove Command A Plus

  2. OpenAI

    GPT-5.3 Chat

    Released Mar 3, 2026Deprecated

    32/100
    • ECI—
    • Price$1.75 / $14.00
    • Context128K
    Full specs Remove GPT-5.3 Chat

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Command A Plus is our pick

Command A Plus is the better all-round choice, scoring 35/100 against GPT-5.3 Chat (32). It leads on price and inputs & features. 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 priceCommand A PlusCommand A Plus $4.38 · GPT-5.3 Chat $4.81 per 1M tokens (3:1 blend)
  • Longest contextAbout the sameCommand A Plus 128,000 · GPT-5.3 Chat 128,000 tokens
  • Widest inputsSame inputsCommand A Plus: Text, Images · GPT-5.3 Chat: Text, Images
  • Self-hostingCommand A PlusPublishes downloadable weights
How the score is built
MeasureWeightCommand A PlusGPT-5.3 Chat
Price50%1918
Inputs & features30%7060
Context window20%2424
Overall100%35/10032/100

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.

Command A Plus vs GPT-5.3 Chat specifications side by side
SpecificationCommand A PlusCohereGPT-5.3 ChatOpenAI
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$2.50$1.75 (best)
Output$10.00 (best)$14.00
Cached input—$0.175
Blended (3:1)$4.38 (best)$4.81
Long-context rateSame rateSame rate
Price sourceOfficial Cohere APIOfficial OpenAI API
Limits
Context window128,000 tokens128,000 tokens
Max output64,000 tokens (best)16,384 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesNo
Tool callingYesYes
Structured outputYesYes
Availability
WeightsOpenProprietary
API model IDcommand-a-plus-05-2026gpt-5.3-chat-latest
API providers14 (best)
ReleasedMay 20, 2026Mar 3, 2026
Knowledge cutoffApr 1, 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.

  • Command A Plus$45.00
  • GPT-5.3 Chat$45.50
04 — Questions

Which should you choose?

Which is better: Command A Plus or GPT-5.3 Chat?

Command A Plus is the better all-round choice, scoring 35/100 against GPT-5.3 Chat (32). It leads on price and inputs & features. 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, Command A Plus or GPT-5.3 Chat?

Command A Plus is cheaper at $2.50 input / $10.00 output per million tokens (official Cohere API price). GPT-5.3 Chat 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 $4.38 per million tokens for Command A Plus versus $4.81 for GPT-5.3 Chat (1.1× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Command A Plus has not been scored yet and GPT-5.3 Chat has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Command A Plus and GPT-5.3 Chat 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?

Command A Plus and GPT-5.3 Chat share the same 128,000-token context window. Maximum output per response: Command A Plus up to 64,000, GPT-5.3 Chat up to 16,384 tokens.

Which can read images, PDFs, audio or video?

Command A Plus accepts text and images; GPT-5.3 Chat accepts text and images. They handle the same number of input types.

Are any of these open source?

Command A Plus publishes its weights and can be self-hosted; GPT-5.3 Chat is proprietary.

Which is newer?

Command A Plus is the newest, released May 20, 2026. GPT-5.3 Chat came out Mar 3, 2026. Knowledge cutoff: Command A Plus Apr 1, 2025, GPT-5.3 Chat 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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