{
  "id": 11925043,
  "title": "Is the most expensive AI the smartest? 23 LLMs, capability vs API price (Oct 2026)",
  "url": "https://urgent.news/2026/10/04/is-the-most-expensive-ai-the-smartest-23-llms-capability-vs-api-price",
  "topic": "ai",
  "section": "AI",
  "published": "2026-10-04T12:43:05.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/jaehyun_cho_0dff271e0d2e5/is-the-most-expensive-ai-the-smartest-23-llms-capability-vs-api-price-oct-2026-1ank"
  },
  "original_language": "en",
  "account": "Is the most expensive AI model the smartest one? Not necessarily, says a new analysis of 23 language models (LLMs) and their API prices. The top model costs about half the price of the runner-up, while a model at just 5% of the top price performs within 13 points of it on the Epoch Capabilities Index (ECI). The ECI combines dozens of benchmarks into a single score for math, coding, science, and reasoning abilities.\n\nThe best value models lie on a \"green line\" where lower-priced models offer equivalent or higher capability scores. Anything below this line costs more for the same or higher performance. For instance, Claude Opus 5.5, with an ECI score of 167.3, is the most capable model at a modest price of $182 for 23,000 chat requests. However, its cheaper counterpart, Claude Sonnet 5.5, achieves 2.2 points less in capability for half the cost at $91.\n\nOther notable models include Gemini 3.8 Flash and DeepSeek V4 Flash, which sit 10-13 points below the top performers but offer substantial savings, making them suitable for tasks like classification, extraction, summaries, and general chatbot interactions. Some popular choices, such as Claude Fable 5.1, GPT-5.5, and Gemini 3.1 Pro, fall below the optimal line and may not provide the best value despite their popularity.\n\nInterestingly, GPT-6 Sol, a model not yet scored on the ECI, is predicted to join the green line, potentially alongside Claude Sonnet 5.5, given similar pricing. The analysis, updated daily, highlights that merely selecting a model based on its price tag doesn't guarantee the best performance; evaluating the specific task requirements is crucial. The full write-up, complete with tables and charts, is available for free at AI model capability vs price ranking (free, no sign-up).",
  "summary": "Is the most expensive AI model the smartest one? I put 23 models' capability scores next to their API prices to check. Short answer: no. The top model costs about half of what the runner-up costs, and a model at 5% of the top price lands within 13 points of it. Capability scores come from the Epoch Capabilities Index (ECI) by Epoch AI, which combines dozens of benchmarks (math, coding, science,…",
  "key_points": [
    "Most expensive AI model not necessarily smartest, analysis shows",
    "Top model costs half price of runner-up, 5% cheaper model performs 13 points close",
    "Green line indicates best value models with lower cost, higher capability scores"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}