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Comparison · 2 models · Updated Oct 4, 2026

Command A Reasoning vs Jamba Large

Too close to call on our weighted score (Jamba Large 30, Command A Reasoning 27). The right pick depends on what you value most.

  1. Cohere

    Command A Reasoning

    Released Aug 21, 2025

    27/100
    • ECI—
    • Price$2.50 / $10.00
    • Context256K
    Full specs Remove Command A Reasoning

  2. AI21 Labs

    Jamba Large

    Released Jul 1, 2025

    30/100
    • ECI—
    • Price$2.00 / $8.00
    • Context256K
    Full specs Remove Jamba Large

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01 — Verdict

Too close to call

It is close. Our weighted score puts them within 2 points (Jamba Large 30/100, Command A Reasoning 27/100), so choose by what matters most for your work: Jamba Large 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 priceJamba LargeJamba Large $3.50 · Command A Reasoning $4.38 per 1M tokens (3:1 blend)
  • Longest contextAbout the sameCommand A Reasoning 256,000 · Jamba Large 256,000 tokens
  • Widest inputsSame inputsCommand A Reasoning: Text · Jamba Large: Text
  • Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
How the score is built
MeasureWeightCommand A ReasoningJamba Large
Price50%1924
Inputs & features30%3535
Context window20%3636
Overall100%27/10030/100

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.

Command A Reasoning vs Jamba Large specifications side by side
SpecificationCommand A ReasoningCohereJamba LargeAI21 Labs
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$2.50$2.00 (best)
Output$10.00$8.00 (best)
Cached input——
Blended (3:1)$4.38$3.50 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Cohere APIOfficial AI21 Labs API
Limits
Context window256,000 tokens256,000 tokens
Max output32,000 tokens (best)4,096 tokens
Inputs and features
TextYesYes
ImagesNoNo
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesNo
Tool callingYesYes
Structured outputNoYes
Availability
WeightsOpenOpen
API model IDcommand-a-reasoning-08-2025jamba-large
API providers3 (best)1
ReleasedAug 21, 2025Jul 1, 2025
Knowledge cutoffJun 1, 2024Aug 22, 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.

  • Command A Reasoning$45.00
  • Jamba Large$36.00
04 — Questions

Which should you choose?

Which is better: Command A Reasoning or Jamba Large?

It is close. Our weighted score puts them within 2 points (Jamba Large 30/100, Command A Reasoning 27/100), so choose by what matters most for your work: Jamba Large 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, Command A Reasoning or Jamba Large?

Jamba Large is cheaper at $2.00 input / $8.00 output per million tokens (official AI21 Labs API price). Command A Reasoning costs $2.50 input / $10.00 output per million tokens (official Cohere API price). At a typical mix of three input tokens to one output token, that is $3.50 per million tokens for Jamba Large versus $4.38 for Command A Reasoning (1.3× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Command A Reasoning has not been scored yet and Jamba Large has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Command A Reasoning and Jamba Large 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 Reasoning and Jamba Large share the same 256,000-token context window. Maximum output per response: Command A Reasoning up to 32,000, Jamba Large up to 4,096 tokens.

Which can read images, PDFs, audio or video?

Command A Reasoning accepts text; Jamba Large accepts text. They handle the same number of input types.

Are any of these open source?

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

Which is newer?

Command A Reasoning is the newest, released Aug 21, 2025. Jamba Large came out Jul 1, 2025. Knowledge cutoff: Command A Reasoning Jun 1, 2024, Jamba Large Aug 22, 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 Oct 4, 2026.

05 — Keep comparing

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