{
  "$comment": "Derived from https://plainlyai.org/model-facts by modelfacts.py. Do not edit: the page is the source and this file is regenerated from it. Token counts are the figures printed on the page normalised to integers, not a claim about a vendor's exact limit; where a vendor publishes an exact figure the page says so in its notes. A null figure is never 'unknown' — see unverified.",
  "source": "https://plainlyai.org/model-facts",
  "verified": "2026-09-23",
  "units": {
    "context": "tokens",
    "max_output": "tokens",
    "input_usd_per_mtok": "USD per million input tokens",
    "output_usd_per_mtok": "USD per million output tokens"
  },
  "rights": "Free to quote. If you reproduce a figure from here, carry its verified date with it.",
  "models": [
    {
      "vendor": "Anthropic",
      "model": "Claude Fable 5.1",
      "api_id": "claude-fable-5-1",
      "context": 1000000,
      "max_output": 128000,
      "input_usd_per_mtok": 10.0,
      "output_usd_per_mtok": 50.0,
      "reliable_cutoff": "Jun 2026",
      "training_cutoff": "Jun 2026",
      "unverified": {}
    },
    {
      "vendor": "Anthropic",
      "model": "Claude Opus 5.5",
      "api_id": "claude-opus-5-5",
      "context": 1000000,
      "max_output": 128000,
      "input_usd_per_mtok": 4.0,
      "output_usd_per_mtok": 20.0,
      "reliable_cutoff": "Jun 2026",
      "training_cutoff": "Jun 2026",
      "unverified": {}
    },
    {
      "vendor": "Anthropic",
      "model": "Claude Sonnet 5",
      "api_id": "claude-sonnet-5",
      "context": 1000000,
      "max_output": 128000,
      "input_usd_per_mtok": 2.0,
      "output_usd_per_mtok": 10.0,
      "reliable_cutoff": "Jan 2026",
      "training_cutoff": "Jan 2026",
      "unverified": {}
    },
    {
      "vendor": "Anthropic",
      "model": "Claude Haiku 4.5",
      "api_id": "claude-haiku-4-5-20251001",
      "context": 200000,
      "max_output": 64000,
      "input_usd_per_mtok": 1.0,
      "output_usd_per_mtok": 5.0,
      "reliable_cutoff": "Feb 2025",
      "training_cutoff": "Jul 2025",
      "unverified": {}
    },
    {
      "vendor": "OpenAI",
      "model": "GPT-6 Astra",
      "api_id": "gpt-6-astra",
      "context": 1050000,
      "max_output": 128000,
      "input_usd_per_mtok": 10.0,
      "output_usd_per_mtok": 50.0,
      "unverified": {}
    },
    {
      "vendor": "OpenAI",
      "model": "GPT-6 Sol",
      "api_id": "gpt-6-sol",
      "context": 1050000,
      "max_output": 128000,
      "input_usd_per_mtok": 2.0,
      "output_usd_per_mtok": 10.0,
      "unverified": {}
    },
    {
      "vendor": "OpenAI",
      "model": "GPT-6 Luna",
      "api_id": "gpt-6-luna",
      "context": 1050000,
      "max_output": 128000,
      "input_usd_per_mtok": 0.1,
      "output_usd_per_mtok": 0.5,
      "unverified": {}
    },
    {
      "vendor": "Google",
      "model": "Gemini 3.8 Flash",
      "api_id": "gemini-3.8-flash",
      "context": 1050000,
      "max_output": 64000,
      "input_usd_per_mtok": 0.75,
      "output_usd_per_mtok": 3.75,
      "unverified": {}
    },
    {
      "vendor": "Meta",
      "model": "Muse Spark 1.2",
      "api_id": "muse-spark-1.2",
      "context": null,
      "max_output": null,
      "input_usd_per_mtok": 1.25,
      "output_usd_per_mtok": 4.25,
      "unverified": {
        "context": {
          "shown": "not published",
          "reason": "Meta's pricing page gives rates without stating a context limit"
        },
        "max_output": {
          "shown": "not published",
          "reason": "Meta's pricing page gives rates without stating an output limit"
        }
      }
    },
    {
      "vendor": "Meta",
      "model": "Llama 4 / Llama 3",
      "api_id": "—",
      "context": null,
      "max_output": null,
      "input_usd_per_mtok": null,
      "output_usd_per_mtok": null,
      "unverified": {
        "context": {
          "shown": "n/a",
          "reason": "run by you or your host, so no vendor-set limit exists"
        },
        "max_output": {
          "shown": "n/a",
          "reason": "run by you or your host, so no vendor-set limit exists"
        },
        "input_usd_per_mtok": {
          "shown": "no first-party price",
          "reason": "Meta publishes no per-token price; cost depends on where you run it"
        },
        "output_usd_per_mtok": {
          "shown": "no first-party price",
          "reason": "Meta publishes no per-token price; cost depends on where you run it"
        }
      }
    }
  ]
}