AI leaderboard · Long prompts

Best AI for long prompts: 395 models ranked by blind votes

The longest prompts on the arena, such as a pasted document with a question about it. Ranked by LMArena’s blind votes, every score with its margin of error and, beside it, the list price of each model on our price list.

Scores from LMArena, published 20 October 2026, under CC BY 4.0. Prices from each maker’s pricing page, read on 15 October 2026.

Top score
1543Gemini 4 Argon (High) from Google
Models ranked
395
Level with the leader
2
On our price list
1
Published
20 October 2026

Level: the votes cannot separate it from the leader.

On LMArena’s Long prompts board, Gemini 4 Argon (High) from Google leads with 1543 points from 2,063 blind votes, published 20 October 2026. One other model is statistically level with it. None of the models it ranks has an API price on our list yet.

Best AI for long prompts

The longest prompts on the arena, such as a pasted document with a question about it.

LMArena scores of 51 AI models, with their 95% intervals, votes and list prices
#ModelScoreVotesPer 1M tokens, in / out
1Gemini 4 Argon (High)Google154395% interval 1529 to 15572,063·
1Claude Opus 5.5 (High)Anthropic152495% interval 1513 to 15344,043·
2Claude Fable 5 (High)Anthropic152295% interval 1516 to 152720,128·
2Claude Opus 4.6 (High)Anthropic152295% interval 1517 to 152635,006·
2Claude Opus 4.6Anthropic151695% interval 1512 to 152137,950·
2Claude Opus 4.7 (High)Anthropic151595% interval 1510 to 152030,103·
2Claude Fable 5.1 (Max)Anthropic151095% interval 1502 to 15196,456·
4Gemini 3.8 Flash (High)Google151095% interval 1504 to 151619,059·
4Muse Wonder (Max)Meta150295% interval 1489 to 15152,257·
5Claude Opus 4.7Anthropic150795% interval 1502 to 151330,835·
6Claude Sonnet 5.5 (xHigh)Anthropic150095% interval 1489 to 15113,434·
7Kimi K3 (Max)Moonshot AI · open weights150395% interval 1497 to 150914,884·
7Claude Opus 5 (High)Anthropic150395% interval 1498 to 150832,535·
7Claude Opus 4.8 (High)Anthropic150395% interval 1498 to 150830,196·
7Claude Opus 5 (Max)Anthropic150395% interval 1496 to 150915,833·
7Claude Opus 4.8Anthropic149995% interval 1494 to 150430,850·
7Gemini 3.7 Flash (High)Google149995% interval 1493 to 150613,535·
7GPT-5.6 Sol (xHigh)OpenAI149995% interval 1493 to 150419,254·
7MiMo-V2.6-ProXiaomi · open weights149495% interval 1480 to 15091,648·
7Qwen3.7-Max-PreviewAlibaba149195% interval 1475 to 15061,722·
8Gemini 3.1 Pro PreviewGoogle149995% interval 1495 to 150357,242·
8Muse Spark 1.3 (Max)Meta149695% interval 1489 to 15048,715·
10Claude Opus 4.5 (High, 32K, 20251101)Anthropic149595% interval 1488 to 15029,825·
10Qwen3.8-MaxAlibaba149195% interval 1485 to 149813,032·
10Muse Spark 1.2 (xHigh)Meta148895% interval 1478 to 14984,199·

Where the ranking comes from

The scores, intervals and ranks are LMArena’s. The prices are ours.

Blind votes
LMArena puts the same prompt to two anonymous models and asks the person who wrote it to pick the better answer. The votes place every model on one scale, where a gap of 100 points means the higher model wins about 64 times in 100.
Style control
The scores discount answer length and formatting, so a model does not climb by writing more or by adding headings and lists.
Shared ranks
A model’s rank is one plus the number of models whose whole 95% interval sits above its own. Models the votes cannot separate share a rank, which is why several can be first.
Settings
A model can appear more than once, at different reasoning settings: the line under its name gives the entry as LMArena lists it. Entries with web search switched on are a different product and carry no price.
Prices
The list price per million tokens from the maker’s own pricing page, read on 15 October 2026. It is a price per token, not per answer: a higher reasoning setting spends more tokens on the same question.

Source: LMArena, leaderboard dataset (revision 9041150e, published 20 October 2026), licensed under CC BY 4.0. We change no score: we add the prices and the links to our model pages.

What each of them costs to run

The price list works three everyday jobs on every model, and our own benchmark runs them on real business tasks to see which pass.

Scores published 20 October 2026