▌tickfoundry
capture livesign inget the data →
kalshi historical data / science and technology / KXBESTLLM
§science and technology

Best LLM, tick by tick.
Kalshi series KXBESTLLM: order book and trades, 2026-10-08 → 2026-10-23.

The order-book and trade history of Kalshi's Best LLM series (new markets on an irregular schedule, one event per game, match or release): top of book on every change, the 25-level book on every change in YES terms, every trade with the taker's side, and Kalshi's own ticker, with exchange timestamps to the millisecond. Captured by us from Kalshi's websocket on two independent legs and checked against the exchange's own book snapshots.

16 days2026-10-08 → 2026-10-23 · every day since its first · ~389 kB per day · 6 MB on disk · 34 open markets
pull KXBESTLLM days →schemapricing

What a KXBESTLLM day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 16 days on disk.

Top of book (every change)kalshi_l1

Best YES bid and ask with sizes and the spread, one row whenever either changed, derived tick by tick from the rebuilt book: not Kalshi's conflated ticker.

~13 kB per KXBESTLLM day
Order book, 25 levels, every changekalshi_l2

The whole ladder after every book event, in YES terms (the NO bids become the asks, at their sizes), 25 levels a side: wide columns bid_px_1 … ask_sz_25, plus the exchange's own hourly snapshots. Each row is self-contained, so you can start reading mid-day.

~352 kB per KXBESTLLM day
Tradeskalshi_trades

Every trade: YES and NO price, size in contracts, the taker's side, block-trade flag, trade id.

~5 kB per KXBESTLLM day
Kalshi ticker (~1 s)kalshi_ticker

Kalshi's own ticker feed, about one update a second per market: last price, YES bid/ask with sizes, cumulative volume and open interest in contracts and dollars.

~18 kB per KXBESTLLM day

KXBESTLLM markets

The 12 closing nearest to now, from Kalshi's daily market list. Each is a row key (market_ticker) in every table, captured from the day it opens until it settles.

Best LLM at the end of the decade?: AlibabaKXBESTLLM-29DEC31-ALIcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: AmazonKXBESTLLM-29DEC31-AMZNcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: AnthropicKXBESTLLM-29DEC31-ANTHcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: Arcee AIKXBESTLLM-29DEC31-ARCEcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: BaiduKXBESTLLM-29DEC31-BAIDcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: ByteDanceKXBESTLLM-29DEC31-BYTEcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: China MobileKXBESTLLM-29DEC31-CMOBcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: CohereKXBESTLLM-29DEC31-COHRcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: DeepSeekKXBESTLLM-29DEC31-DSKcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: Essential AIKXBESTLLM-29DEC31-ESSNcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: GoogleKXBESTLLM-29DEC31-GOOGcloses 2029-12-31 14:59 UTC
Best LLM at the end of the decade?: HuaweiKXBESTLLM-29DEC31-HUAcloses 2029-12-31 14:59 UTC

Coverage notes for KXBESTLLM

  • First day on disk: 2026-10-08. The series' first book appeared then. New days are added daily.
  • Trades before 2026-09-27. Kalshi's historical API has no tick-level order book, so earlier KXBESTLLM trades are in the whole-exchange trades history (from 2021-06-30, one file a day): filter market_ticker to this series' markets, which start with KXBESTLLM-.
  • Every bundle ships a README with the schemas and, per day, how often the rebuilt book matched the exchange's own snapshots, for your exact range.

Pricing

A month of KXBESTLLM, every table, is about 11 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXBESTLLM if you like, at full book depth; L10 ($49/mo) carries every series' book at 10 levels and L25 ($99/mo) the full 25-level book. Each includes 7 days before you join and every day after. Any free account can pull 2026-10-07, any series, up to 1.0 GB.

Starter: KXBESTLLM at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

Other science and technology series on Kalshi

DeepSeek market shareOpenAI Market ShareGoogle AI Market ShareYear-end top LLMAnthropic Market ShareTop Chinese AIOpen weights AI market sharetoken usageOpenAI Vercel spend shareGemini release dateAnthropic Vercel spend shareChatGPT Release DateAI Arena ScoreOpenAI personal AI agentAnthropic Vercel requests shareDeepSeek Vercel requests shareUS Test scores in ReadingMoonshot AI Vercel spend shareSpaceX launchesGoogle Vercel requests share… the whole venue