Who ranks #1 on the Factscore leaderboard?
As of August 20, 2026, Grok-4.1 by xAI ranks #1 on Factscore at 97.0%. API pricing is $3.00/M input and $15.00/M output.
As of August 20, 2026, Grok-4.1 is #1 for Factscore at 97.0%. Ranked by the Factscore score 2 models in this index have a published Factscore score. Factscore leaderboard: rank models by Factscore next to live API token prices.
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As of August 20, 2026, Grok-4.1 by xAI is #1 for Factscore at 97.0%. Ranked by the Factscore score This board also tracks Factscore. Next on the same board: GPT-5. This factscore leaderboard ranks models by Factscore. 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 | Factscore | Input /M | Output /M |
|---|---|---|---|---|
| 1 | Grok-4.1 | 97.0% | $3.00 | $15.00 |
| 2 | GPT-5 | 1% | $1.25 | $10.00 |
Rank one eval at a time. All LLM benchmarks.
As of August 20, 2026, Grok-4.1 by xAI ranks #1 on Factscore at 97.0%. API pricing is $3.00/M input and $15.00/M output.
The current Factscore ranking as of August 20, 2026 is 1. Grok-4.1 at 97.0%; 2. GPT-5 at 1%.
GPT-5 is the cheapest scored model on this factscore leaderboard at $1.25/M input and $10.00/M output ($11.25 blended). Grok-4.1 still leads Factscore at 97.0%.
Not automatically. Grok-4.1 leads Factscore, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Factscore 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.
Factscore is a public LLM eval (the Factscore score). This page ranks models that have published a score, next to live API prices.
This page is the Factscore leaderboard. Models are sorted by Factscore, 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 Factscore score next to live API $/M so you can pick a production SKU, not only a trophy number.