ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Laguna S 2.1 vs GPT-5.6 Cyber

Laguna S 2.1 comes out ahead, 69 to 30 on our weighted score, and it is the cheaper option too.

  1. Our pick

    Poolside

    Laguna S 2.1

    Released Jul 21, 2026

    69/100
    • ECI—
    • Price$0.10 / $0.20
    • Context1.05M
  2. OpenAI

    GPT-5.6 Cyber

    Released Aug 7, 2026

    30/100
    • ECI—
    • Price$12.50 / $75.00
    • Context400K
  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Laguna S 2.1 is our pick

Laguna S 2.1 is the better all-round choice, scoring 69/100 against GPT-5.6 Cyber (30). It leads on price and context window. GPT-5.6 Cyber wins on 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 priceLaguna S 2.1Laguna S 2.1 $0.125 · GPT-5.6 Cyber $28.13 per 1M tokens (3:1 blend)
  • Longest contextLaguna S 2.1Laguna S 2.1 1,048,576 · GPT-5.6 Cyber 400,000 tokens
  • Widest inputsGPT-5.6 CyberLaguna S 2.1: Text · GPT-5.6 Cyber: Text, Images
  • Self-hostingLaguna S 2.1Publishes downloadable weights
How the score is built
MeasureWeightLaguna S 2.1GPT-5.6 Cyber
Price50%930
Inputs & features30%3570
Context window20%6144
Overall100%69/10030/100

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.

Laguna S 2.1 vs GPT-5.6 Cyber specifications side by side
SpecificationLaguna S 2.1PoolsideGPT-5.6 CyberOpenAI
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$0.10 (best)$12.50
Output$0.20 (best)$75.00
Cached input—$1.25
Blended (3:1)$0.125 (best)$28.13
Long-context rateSame rateSame rate
Price sourceMedian of 4 providersOfficial OpenAI API
Limits
Context window1,048,576 tokens (best)400,000 tokens
Max output32,768 tokens128,000 tokens (best)
Inputs and features
TextYesYes
ImagesNoYes
PDFsNoNo
AudioNoNo
VideoNoNo
ReasoningYesYeslow · medium · high · xhigh · max
Tool callingYesYes
Structured outputNoYes
Availability
WeightsOpenProprietary
API model IDpoolside/laguna-s-2.1gpt-daybreak-red-latest
API providers6 (best)1
ReleasedJul 21, 2026Aug 7, 2026
Knowledge cutoff—Feb 16, 2026
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.

  • Laguna S 2.1$1.40
  • GPT-5.6 Cyber$275.00
04 — Questions

Which should you choose?

Which is better: Laguna S 2.1 or GPT-5.6 Cyber?

Laguna S 2.1 is the better all-round choice, scoring 69/100 against GPT-5.6 Cyber (30). It leads on price and context window. GPT-5.6 Cyber wins on 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, Laguna S 2.1 or GPT-5.6 Cyber?

Laguna S 2.1 is cheaper at $0.10 input / $0.20 output per million tokens (median across 4 API providers; free on Poolside). GPT-5.6 Cyber costs $12.50 input / $75.00 output per million tokens (official OpenAI API price). At a typical mix of three input tokens to one output token, that is $0.125 per million tokens for Laguna S 2.1 versus $28.13 for GPT-5.6 Cyber (225× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Laguna S 2.1 has not been scored yet and GPT-5.6 Cyber has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Laguna S 2.1 and GPT-5.6 Cyber 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?

Laguna S 2.1 has the largest context window at 1,048,576 tokens, against 400,000 for GPT-5.6 Cyber. Maximum output per response: Laguna S 2.1 up to 32,768, GPT-5.6 Cyber up to 128,000 tokens.

Which can read images, PDFs, audio or video?

Laguna S 2.1 accepts text; GPT-5.6 Cyber accepts text and images. GPT-5.6 Cyber handles the widest range of inputs.

Are any of these open source?

Laguna S 2.1 publishes its weights and can be self-hosted; GPT-5.6 Cyber is proprietary.

Which is newer?

GPT-5.6 Cyber is the newest, released Aug 7, 2026. Laguna S 2.1 came out Jul 21, 2026. Knowledge cutoff: GPT-5.6 Cyber Feb 16, 2026.

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.