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Mercury 2.5

Inception's diffusion-based LLM that generates tokens in parallel for very high output speed; tunable reasoning.

Inception
Closed
Released 8 Sep 2026

Where it ranks

C
Chat & assistants
Models · Cloud · 12 on Artificial Analysis Intelligence Index (secondary benchmark)
C
Coding
Models · Cloud · 12 on Artificial Analysis Intelligence Index (secondary benchmark)

Facts

Vendor: Inception
Family: Mercury
Released: 8 Sep 2026
Weights: Closed: API and apps only
API price: $0.2 in / $0.75 out per 1M tokens (list price; launch discount announced)
Access: Paid only
Last verified: 19 Oct 2026

Price from inceptionlabs.ai, 19 Oct 2026.

Benchmark results

Benchmark	Result	Entry on the leaderboard	As of	Source
Artificial Analysis Intelligence Index	12	`Mercury 2.5` Raw value from the page's embedded model data; the site displays it rounded to an integer.	19 Oct 2026	artificialanalysis.ai

Where you can use it

No tracked tool lists this model yet.

Earlier versions

Mercury 2 · —

Sources