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ModelCap

Model decision surface

Compare AI models

Start with GPT-5.4 Nano and Laguna XS 2.1, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.

Current public data

GPT-5.4 Nano vs Laguna XS 2.1

Live dataset updated 9/10/2026, 6:20:44 AM UTC

Open 1200×630 evidence receipt
Factual comparison of GPT-5.4 Nano and Laguna XS 2.1
Field
ModelCap position#78#75
Index score50.851.9
EvidenceMeasured4 public benchmark observations across 4 boardsEstimated3 reported rows against measured corpus ladders (28%); global-corpus-prior over 185 held-out anchors (72%); shrunk 4.1 up toward the measured corpus
Input / 1M$0.20$0.06
Output / 1M$1.25$0.12
Pricing statusfreshfresh
Context400K262K
Providers21
Weight accessAPI onlyRestricted license

Decision facts

  • GPT-5.4 Nano is #78; Laguna XS 2.1 is #75 on the same current language board.
  • Index scores are 50.8 for GPT-5.4 Nano and 51.9 for Laguna XS 2.1. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
  • Evidence differs: GPT-5.4 Nano is Measured; Laguna XS 2.1 is Estimated.
  • Listed output price per 1M tokens is $1.25 for GPT-5.4 Nano and $0.12 for Laguna XS 2.1. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $1.02 for GPT-5.4 Nano versus $0.18 for Laguna XS 2.1. Laguna XS 2.1 costs 82.4% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.
  • Published context is 400,000 tokens for GPT-5.4 Nano and 262,144 for Laguna XS 2.1.
  • Weight access differs: GPT-5.4 Nano is none; Laguna XS 2.1 is restricted.
  • ModelCap currently lists 2 providers for GPT-5.4 Nano and 1 for Laguna XS 2.1.

These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.

Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.