Science Prediction Market Data — Kalshi
Tick-by-tick trades and L2 order-book depth for 26 science series on Kalshi — AI, space-flight and research milestones. 5,074 series-days covering February 2026 – present, every contract of every series captured co-located with nanosecond venue and receive timestamps — sold as day bundles, €1 per day, bought as a guest with instant download.
Browse science data by topic
Each topic hub lists its series per venue with 30-day activity (to 2026-11-02), coverage and FAQ.
All science series
Every live series in this topic, largest archive first. Each series page lists its exact coverage, day count and free samples; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| Year-end top LLM | Kalshi | event | 244 | March 2026 – present | 843 MB | €1 | Buy days |
| SpaceX launches | Kalshi | event | 244 | March 2026 – present | 373 MB | €1 | Buy days |
| Top Chinese AI | Kalshi | event | 105 | July 2026 – present | 321 MB | €1 | Buy days |
| Which countries will report an Ebola case? | Kalshi | event | 171 | May 2026 – present | 205 MB | €1 | Buy days |
| Will any company achieve AGI before [date]? | Kalshi | event | 244 | March 2026 – present | 179 MB | €1 | Buy days |
| Top model | Kalshi | monthly | 244 | March 2026 – present | 170 MB | €1 | Buy days |
| H100 Monthly Price | Kalshi | monthly | 149 | March 2026 – August 2026 | 163 MB | €1 | Buy days |
| Claude Model Release | Kalshi | event | 228 | March 2026 – present | 141 MB | €1 | Buy days |
| Waymo new city | Kalshi | event | 174 | May 2026 – present | 138 MB | €1 | Buy days |
| H200 Monthly Price | Kalshi | monthly | 149 | March 2026 – August 2026 | 134 MB | €1 | Buy days |
| AI Coding | Kalshi | event | 239 | March 2026 – present | 128 MB | €1 | Buy days |
| Prime energy source | Kalshi | event | 250 | February 2026 – present | 111 MB | €1 | Buy days |
| B200 Monthly Price | Kalshi | monthly | 149 | March 2026 – August 2026 | 106 MB | €1 | Buy days |
| Humanity's Last Exam | Kalshi | event | 167 | May 2026 – present | 90.1 MB | €1 | Buy days |
| Best AI coding model | Kalshi | event | 244 | March 2026 – present | 79.8 MB | €1 | Buy days |
| Top-ranked AI | Kalshi | event | 244 | March 2026 – present | 66.7 MB | €1 | Buy days |
| Starship launches to Space | Kalshi | event | 160 | May 2026 – present | 66.5 MB | €1 | Buy days |
| AI capability spike | Kalshi | event | 244 | March 2026 – present | 62.7 MB | €1 | Buy days |
| A100 Monthly Price | Kalshi | event | 149 | March 2026 – August 2026 | 51.1 MB | €1 | Buy days |
| Model hitting thresholds | Kalshi | event | 244 | March 2026 – present | 42.8 MB | €1 | Buy days |
| RTX 5059 Monthly Price | Kalshi | event | 149 | March 2026 – August 2026 | 42.1 MB | €1 | Buy days |
| Will the FDA approve drug? | Kalshi | event | 173 | May 2026 – present | 41.0 MB | €1 | Buy days |
| B100 Yearly Directional Price | Kalshi | annual | 160 | May 2026 – present | 36.9 MB | €1 | Buy days |
| What hardware will openAI/Jony Ive launch | Kalshi | event | 244 | March 2026 – present | 34.2 MB | €1 | Buy days |
| Nobel Physics prize | Kalshi | annual | 146 | May 2026 – October 2026 | 33.2 MB | €1 | Buy days |
| A100 Yearly Directional Price | Kalshi | annual | 160 | May 2026 – present | 16.7 MB | €1 | Buy days |
Science — development since capture
174,450 trades and $4.4M of USD turnover across 26 science series since 2026-08-09; busiest single series-day 2026-09-30 with $144.7K, biggest contract KXAISPIKE-27B-1540 (2026-10-28, $86.2K).
| Month | Series active | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|---|
| Nov 2026 (month to date) | 20 | 2 | 3,815 | $95.4K | $47.7K | 222 | 2.1M | — |
| Oct 2026 | 21 | 31 | 69,724 | $1.9M | $61.0K | 3,718 | 22.4M | +25.1 % |
| Sep 2026 | 21 | 30 | 60,904 | $1.5M | $50.3K | 2,900 | 18.6M | +60.6 % |
| Aug 2026 | 21 | 23 | 40,007 | $940.4K | $40.9K | 2,803 | 17.5M | — |
Science series — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.
Science — turnover by weekday
Wednesdays are the busiest day at about $98.7K of USD turnover, averaged over the captured days of the last 30.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $56.3K | 2.4K | 5 | |
| Tuesday | $68.9K | 2.9K | 4 | |
| Wednesday | $98.7K | 2.5K | 4 | |
| Thursday | $54.7K | 2.0K | 4 | |
| Friday | $46.5K | 1.7K | 4 | |
| Saturday | $37.1K | 1.6K | 4 | |
| Sunday | $38.6K | 2.0K | 5 |
Science series — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.
Rising science series — 30 days vs the 30 before
| # | Series | Venue | Turnover (30d) | Prior 30d | Growth (avg / day) | Trades (30d) |
|---|---|---|---|---|---|---|
| 1 | Which countries will report an Ebola case? | Kalshi | $33.8K | $4.6K | +634.7 % | 1,531 |
| 2 | Waymo new city | Kalshi | $86.3K | $7.3K | +369.8 % | 2,088 |
| 3 | Model hitting thresholds | Kalshi | $12.4K | $1.3K | +278.8 % | 871 |
| 4 | SpaceX launches | Kalshi | $291.2K | $200.7K | +45.1 % | 8,372 |
| 5 | Top model | Kalshi | $25.2K | $20.0K | +26.2 % | 1,158 |
| 6 | Year-end top LLM | Kalshi | $1.0M | $967.1K | +5.8 % | 40,694 |
| 7 | Will any company achieve AGI before [date]? | Kalshi | $29.5K | $28.5K | +3.5 % | 684 |
| 8 | AI capability spike | Kalshi | $105.0K | $126.0K | −16.7 % | 728 |
| 9 | Best AI coding model | Kalshi | $12.9K | $21.7K | −40.5 % | 1,136 |
| 10 | AI Coding | Kalshi | $16.6K | $55.2K | −69.9 % | 1,057 |
Growth of average USD turnover per captured day, the 30 days to 2026-11-02 against the 30 days before; series need ≥ 10 captured days in both windows and ≥ $10K of turnover in the current one. From our own daily statistics.
Science prediction markets — trades and turnover per day
Every captured UTC day of the last 30, summed over the 26 science series, from our own tick capture.
| UTC day | Series with stats | Contracts traded | Trades | Turnover | Buy share | L2 updates |
|---|---|---|---|---|---|---|
| 2026-11-02 | 20 | 112 | 2,314 | $60.3K | 57 % | 1.4M |
| 2026-11-01 | 20 | 110 | 1,501 | $35.1K | 41 % | 716.3K |
| 2026-10-31 | 20 | 122 | 2,065 | $68.4K | 33 % | 444.7K |
| 2026-10-30 | 20 | 102 | 2,349 | $84.0K | 55 % | 567.1K |
| 2026-10-29 | 20 | 105 | 3,106 | $107.9K | 39 % | 588.8K |
| 2026-10-28 | 20 | 134 | 3,437 | $193.0K | 66 % | 510.0K |
| 2026-10-27 | 20 | 129 | 3,057 | $93.8K | 60 % | 745.2K |
| 2026-10-26 | 20 | 156 | 2,097 | $36.2K | 45 % | 627.0K |
| 2026-10-25 | 20 | 106 | 2,344 | $44.5K | 47 % | 652.7K |
| 2026-10-24 | 20 | 110 | 1,750 | $30.9K | 48 % | 578.9K |
| 2026-10-23 | 20 | 115 | 1,724 | $36.3K | 53 % | 647.6K |
| 2026-10-22 | 20 | 111 | 1,736 | $37.5K | 70 % | 443.3K |
| 2026-10-21 | 20 | 107 | 2,385 | $72.0K | 50 % | 570.9K |
| 2026-10-20 | 20 | 121 | 2,451 | $48.8K | 67 % | 513.4K |
| 2026-10-19 | 20 | 134 | 2,650 | $67.8K | 68 % | 1.0M |
| 2026-10-18 | 20 | 87 | 2,003 | $25.5K | 59 % | 1.1M |
| 2026-10-17 | 20 | 92 | 1,351 | $25.7K | 60 % | 850.2K |
| 2026-10-16 | 20 | 87 | 1,595 | $44.7K | 63 % | 825.2K |
| 2026-10-15 | 20 | 98 | 1,817 | $45.0K | 63 % | 506.8K |
| 2026-10-14 | 20 | 111 | 2,439 | $88.8K | 79 % | 1.2M |
| 2026-10-13 | 20 | 149 | 3,593 | $81.7K | 58 % | 1.1M |
| 2026-10-12 | 20 | 147 | 2,674 | $66.7K | 47 % | 847.2K |
| 2026-10-11 | 20 | 141 | 2,353 | $39.4K | 63 % | 507.7K |
| 2026-10-10 | 20 | 88 | 1,201 | $23.5K | 58 % | 442.7K |
| 2026-10-09 | 20 | 124 | 1,279 | $21.2K | 45 % | 480.7K |
| 2026-10-08 | 20 | 101 | 1,477 | $28.4K | 48 % | 682.4K |
| 2026-10-07 | 20 | 116 | 1,718 | $40.9K | 43 % | 945.1K |
| 2026-10-06 | 21 | 143 | 2,556 | $51.2K | 63 % | 1.5M |
| 2026-10-05 | 21 | 139 | 2,300 | $50.7K | 62 % | 727.2K |
| 2026-10-04 | 21 | 123 | 1,985 | $48.5K | 66 % | 605.3K |
Per UTC day, summed over every science series that has statistics for that day, from every trade print of every contract in our tick archive. Trades and USD turnover are exact; contracts traded, buy share and L2 (order-book) updates exist for days captured with the extended statistics — earlier days show —.
Most traded science contracts on 2026-11-02
The single event contracts with the most USD turnover on the newest captured day — open and close price and the outcome implied by the last print.
| Contract | Series | Venue | Open → Close | Implied outcome | Trades | Turnover | |
|---|---|---|---|---|---|---|---|
| KXLLM1-26DEC31-GOOG | Year-end top LLM | Kalshi | 0.481 → 0.531 | open | 325 | $25.1K | buy file → |
| KXLLM1-26DEC31-A | Year-end top LLM | Kalshi | 0.396 → 0.400 | open | 263 | $6.3K | buy file → |
| KXLLM1-26NOV30-GOOG | Year-end top LLM | Kalshi | 0.700 → 0.670 | open | 148 | $4.8K | buy file → |
| KXLLM1-26NOV02-GOOG | Year-end top LLM | Kalshi | 0.990 → 0.990 | Yes | 13 | $3.4K | buy file → |
| KXSPACEXCOUNT-26NOV-9 | SpaceX launches | Kalshi | 0.410 → 0.330 | open | 73 | $2.9K | buy file → |
| KXWAYMOCITY-26DEC-DEN | Waymo new city | Kalshi | 0.920 → 0.870 | open | 38 | $2.7K | buy file → |
| KXWAYMOCITY-26DEC-LAS | Waymo new city | Kalshi | 0.920 → 0.860 | open | 25 | $2.2K | buy file → |
| KXLLM1-26NOV30-A | Year-end top LLM | Kalshi | 0.260 → 0.280 | open | 119 | $1.4K | buy file → |
| KXSPACEXCOUNT-26NOV-8 | SpaceX launches | Kalshi | 0.750 → 0.690 | open | 79 | $1.3K | buy file → |
| KXLLM1-26DEC31-OAI | Year-end top LLM | Kalshi | 0.070 → 0.055 | open | 110 | $1.2K | buy file → |
Single contracts ranked by USD turnover on 2026-11-02 (UTC), from every trade print in our tick archive. Prices quote 0..1; the implied outcome reads the last print of the day (≥ 0.97 Yes/Up, ≤ 0.03 No/Down) — venues publish the official result. Each contract’s day file is sold individually, the whole series day as a bundle.
Why buy science prediction-market data here
Four things every page on this site is built on — and the reason the numbers above exist at all.
We record everything
The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.
Institutional grade
Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.
€1 per instrument-day
Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and every venue has free full-day samples to test against first.
Self-service for everyone
Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.
Agents: /llms.txt · MCP server /mcp · every page as markdown via Accept: text/markdown
Science prediction-market data — FAQ
What science prediction-market data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of 26 science series on Kalshi — AI, space-flight and research milestones. Each series page lists its exact coverage and day count.
How far back does the science data go?
Coverage runs February 2026 – present — 5,074 series-days in total across the category.
Is every science contract included?
Yes — every contract of every listed series, every UTC day since we added the venue, at full order-book depth; nothing is sampled or cut to a top-N. The tables on this page show the largest series, the archive holds all of them.
How is the science data sold?
As series-day bundles: one purchase covers every contract of a series for one UTC day, €1 — no subscription, no minimum. Pick days in the shop calendar; delivery is per file, one ZIP per day, or a resumable multi-day archive.
Do I need an account or a sales call?
No. Pick the science series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.
How is the science data captured?
Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.
What format do the files ship in?
One zstd-compressed text file per contract per UTC day, in the same documented schema as every crypto venue; trades also export as gzipped CSV or Parquet at no extra cost. Free samples are on the downloads page, the schema in the market-data specification.
What was the busiest science trading day?
2026-09-30 — $144.7K of USD turnover over 3,200 trades in a single series-day. Since our statistics began on 2026-08-09, 26 science series recorded 174,450 trades and $4.4M in total; the biggest single contract was KXAISPIKE-27B-1540 on 2026-10-28 at $86.2K. Wednesdays are the busiest weekday at about $98.7K per day.