{
  "schema_version": 1,
  "dataset": "price-history",
  "generated_at": "2026-10-17T12:01:21+00:00",
  "run": {
    "id": 82,
    "finished_at": "2026-10-17T12:01:20+00:00"
  },
  "documents": {
    "methodology": "/methodology/",
    "disclaimer": "/disclaimer/",
    "terms": "/terms/",
    "columns": "/data/"
  },
  "currency": "USD",
  "unit": "usd_per_1m_tokens",
  "absent_reasons": {
    "not_applicable": "This tier does not bill this side. A cache-read or cache-write rate is charged on input tokens only, so there is no output price to be missing.",
    "not_published": "The tier bills this side and we have no publishable value for it. The other side of this row is priced. Treat the rate as unknown, not as zero.",
    "none_publishable": "Neither side of this key could be read. The row exists because the key exists; it carries no price at all.",
    "not_yet_in_force": "Every quote for this key is dated into the future, so no rate is in force today. The scheduled_* columns carry the announced rate and the date it takes effect. This is not a gap in our reading."
  },
  "fields": [
    {
      "name": "provider",
      "description": "Vendor, as in the current-price file."
    },
    {
      "name": "api_id",
      "description": "The model id."
    },
    {
      "name": "tier",
      "description": "What is being billed."
    },
    {
      "name": "variant",
      "description": "The qualifier within the tier, or empty."
    },
    {
      "name": "tier_key",
      "description": "tier and variant joined with a colon."
    },
    {
      "name": "input_price_usd_per_1m_tokens",
      "description": "The input rate over this span, in USD per 1,000,000 tokens. Empty is absent; 0.0 is free."
    },
    {
      "name": "output_price_usd_per_1m_tokens",
      "description": "The output rate over this span."
    },
    {
      "name": "currency",
      "description": "Always USD today."
    },
    {
      "name": "unit",
      "description": "Always usd_per_1m_tokens."
    },
    {
      "name": "input_price_absent_reason",
      "description": "Why the input price is empty, if it is."
    },
    {
      "name": "output_price_absent_reason",
      "description": "Why the output price is empty, if it is."
    },
    {
      "name": "first_observed_at",
      "description": "When we first saw this value. ISO 8601 UTC."
    },
    {
      "name": "last_observed_at",
      "description": "When we last saw it. Equal to first_observed_at for a value seen once."
    },
    {
      "name": "observations",
      "description": "How many times we saw it across the span. Consecutive identical values are collapsed into one row: this file is what the price DID, not how often we looked."
    },
    {
      "name": "origin",
      "description": "reconciled if this span came from a published run; backfill if it came from a third-party git history that we never verified."
    },
    {
      "name": "verified_by_us",
      "description": "true if we read this value off a source ourselves at least once during the span."
    },
    {
      "name": "last_verified_by_us",
      "description": "When we last did so, or empty if we never did."
    },
    {
      "name": "confirmed",
      "description": "true if a second independent source agreed during the span."
    },
    {
      "name": "needs_review",
      "description": "true, false, or EMPTY. Empty means no row in this span could carry the flag — every row in it is a backfill, and the flag is a reconciliation-layer one. Empty is not false."
    },
    {
      "name": "effective_date",
      "description": "The date the source stated the value took effect, where it stated one."
    },
    {
      "name": "source",
      "description": "The source the span is attributed to."
    },
    {
      "name": "source_url",
      "description": "The page it was read from."
    },
    {
      "name": "extractor",
      "description": "The reader. litellm_git_backfill is never ours."
    }
  ],
  "count": 1676,
  "history": [
    {
      "provider": "DeepSeek",
      "api_id": "deepseek-chat",
      "tier": "flat",
      "variant": null,
      "tier_key": "flat",
      "input_price_usd_per_1m_tokens": 0.14,
      "output_price_usd_per_1m_tokens": 0.28,
      "currency": "USD",
      "unit": "usd_per_1m_tokens",
      "input_price_absent_reason": null,
      "output_price_absent_reason": null,
      "first_observed_at": "2024-05-07T18:44:55+00:00",
      "last_observed_at": "2024-05-07T18:44:55+00:00",
      "observations": 1,
      "origin": "backfill",
      "verified_by_us": false,
      "last_verified_by_us": null,
      "confirmed": false,
      "needs_review": null,
      "effective_date": null,
      "source": "LiteLLM model_prices_and_context_window.json (git history)",
      "source_url": "https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json",
      "extractor": "litellm_git_backfill"
    },
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      "output_price_usd_per_1m_tokens": 1.1,
      "currency": "USD",
      "unit": "usd_per_1m_tokens",
      "input_price_absent_reason": null,
      "output_price_absent_reason": null,
      "first_observed_at": "2025-02-07T16:25:35+00:00",
      "last_observed_at": "2025-02-07T16:25:35+00:00",
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      "currency": "USD",
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      "first_observed_at": "2025-09-24T17:40:00+00:00",
      "last_observed_at": "2025-09-24T17:40:00+00:00",
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