Who ranks #1 on the Longfact Objects leaderboard?
As of August 20, 2026, GPT-5 by OpenAI ranks #1 on Longfact Objects at 0.8%. API pricing is $1.25/M input and $10.00/M output.
As of August 20, 2026, GPT-5 is #1 for Longfact Objects at 0.8%. Ranked by the Longfact Objects score 1 models in this index have a published Longfact Objects score. Longfact Objects leaderboard: rank models by Longfact Objects next to live API token prices.
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As of August 20, 2026, GPT-5 by OpenAI is #1 for Longfact Objects at 0.8%. Ranked by the Longfact Objects score This board also tracks Longfact Objects. This longfact objects leaderboard ranks models by Longfact Objects. Scores come from public evals. Prices are the live API rates in the table above.
Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)
| Rank | Model | Longfact Objects | Input /M | Output /M |
|---|---|---|---|---|
| 1 | GPT-5 | 0.8% | $1.25 | $10.00 |
Rank one eval at a time. All LLM benchmarks.
As of August 20, 2026, GPT-5 by OpenAI ranks #1 on Longfact Objects at 0.8%. API pricing is $1.25/M input and $10.00/M output.
GPT-5 currently leads Longfact Objects and is also the cheapest scored model on this page, at $1.25/M input and $10.00/M output ($11.25 blended).
Not automatically. GPT-5 leads Longfact Objects, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Longfact Objects against input/output price, context window, and related evals.
Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled August 20, 2026. Treat it as a current index, not a one-off blog post.
Longfact Objects is a public LLM eval (the Longfact Objects score). This page ranks models that have published a score, next to live API prices.
This page is the Longfact Objects leaderboard. Models are sorted by Longfact Objects, with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.
Official eval pages own the methodology. This page keeps the published Longfact Objects score next to live API $/M so you can pick a production SKU, not only a trophy number.