cd /news/artificial-intelligence/lean-prover-dirac-solves-the-2026-in… · home topics artificial-intelligence article
[ARTICLE · art-91580] src=boundlessintuition.com ↗ pub= topic=artificial-intelligence verified=true sentiment=↑ positive

Lean prover Dirac solves the 2026 International Mathematical Olympiad

Boundless Intuition's autonomous proving agent Dirac proved all six problems of the 2026 International Mathematical Olympiad in 7 hours 18 minutes, faster than Pramaana Hardy's 8 hours 57 minutes and Axiom AxiomProver's 24 hours 56 minutes, at a total compute cost of $176.58. The company says the result demonstrates progress toward verified intelligence that can be trusted across mathematical, tax, medical, and other domains.

read4 min views1 publishedAug 11, 2026
Lean prover Dirac solves the 2026 International Mathematical Olympiad
Image: source

Scaling intelligence without scaling trust is a dangerous trajectory. At Boundless Intuition, we are building systems for verified intelligence to address this.

That requires solving two problems at once. Verification must be rigorous enough to establish correctness and fast enough to be useful in the real world.

Eventually, this approach must generalize. The same underlying reasoning system should be able to operate across mathematical theorems, tax rules, medical constraints, semiconductor specifications, security policies, and other domains. The formal representation and verification mechanism may differ, but the need for a checkable guarantee remains the same.

The International Mathematical Olympiad is a useful stress test for that ambition. IMO 2026, held in Shanghai on 15–16 July 2026, is the most prestigious mathematics competition in the world, and its problems are hard in ways that expose the weaknesses of automated provers. We ran Dirac, our autonomous proving agent, on the publicly released formalizations of all six problems published by Axiom Maths and compared our results against other externally published provers on the same statements.

Dirac proved all six.

- Official contest problems:
[imo-official.org/problems/2026](https://www.imo-official.org/problems/2026/) - Our verified solutions:
[github.com/Boundless-Intuition/IMO2026](https://github.com/Boundless-Intuition/IMO2026)

The result #

All three systems were run against the same formalizations. Total proving time across the six problems:

System All six proved Total proving time Verification
Dirac (ours) Yes 7h 18m Comparator pass
Pramaana Hardy Yes 8h 57m Comparator pass
Axiom AxiomProver Yes 24h 56m Comparator pass

Figures for Hardy and AxiomProver are taken from the results published by Pramaana Labs and Axiom Maths, respectively. We thank both Pramaana and Axiom Maths for publishing their results.

Per problem

Problem Dirac time Dirac lines Hardy time Hardy lines AxiomProver time AxiomProver lines
Q1 29m 05s 513 20m 26s 393 24m 521
Q2 1h 20m 18s 1,572 2h 53m 738 6h 1,224
Q3 2h 10m 28s 2,697 3h 04m 2,772 14h 29m 4,229
Q4 15m 59s 387 16m 20s 307 39m 520
Q5 18m 11s 323 31m 09s 337 1h 05m 457
Q6 2h 44m 05s 706 1h 52m 332 2h 19m 771
Total 7h 18m 06s 6,198 8h 57m 4,879 24h 56m 7,722

Dirac is faster overall and the margin comes from the hard end of the paper rather than from the easy problems.

Q3 is where AxiomProver spent 14h 29m. Dirac cleared it in 2h 10m with a 2,697-line proof, shorter than Hardy’s 2,772 and well under AxiomProver’s 4,229.

Q2 is the geometry problem, historically the place where Lean proofs blow up in length and search time. Dirac finished in 1h 20m, against 2h 53m for Hardy and 6h for AxiomProver, by attacking the problem through vectors and linear algebra rather than synthetic geometry. The trade-off is visible in the line count: our proof is more than twice the length of Hardy’s.

Cost #

| Problem | Cost (USD) |
|---|---|

| Q1 | $15.18 | | Q2 | $55.79 | | Q3 | $29.53 | | Q4 | $9.55 | | Q5 | $15.47 | | Q6 | $51.06 | Total | $176.58 |

Where it got interesting #

Q3. Dirac split the game into an upper bound and a lower bound, farmed out a large lemma toolkit to parallel sub-tasks, proved a long lower-bound argument, and assembled the pieces. It is our cleanest result of the six: faster and shorter.

Q6. Dirac reduced the problem to a single crux lemma almost immediately, then spent roughly an hour stuck on the informal argument behind that crux. It eventually extracted a rigorous prime-bounding approach and formalized it cleanly. It got there, but the detour is why Q6 took 2h 44m and trails both competitors. It is the clearest target for the next iteration.

What comes next #

IMO 2026 is one benchmark, but it gives us a clear way to measure progress. Dirac is currently the fastest among the publicly reported systems we compared against, demonstrating that autonomous formal proving can be both rigorous and fast, while still leaving significant room for improvement.

Our next focus is pushing Dirac further on proof decomposition, difficult crux arguments, and proving cost, while improving how quickly and effectively it can generalize its reasoning beyond mathematical formalization.

── more in #artificial-intelligence 4 stories · sorted by recency
── more on @boundless intuition 3 stories trending now
sponsored brought to you by zahid.host 4,200+ EU-deployed projects
reading about agents? ship yours in a single git push.

Run your AI side-project on zahid.host

EU-based hosting, git-push deploys, automatic HTTPS, no cold starts. Free tier with a custom domain — perfect for shipping the agent you just read about.

$git push zahid main
Live at https://your-agent.zahid.host
Get free account → Pricing
from €0/mo · no card required
LIVE [news/lean-prover-dirac-so…] indexed:0 read:4min 2026-08-11 ·