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Mercury
Mercury is a proprietary model from Inception. It ranks #270 of 351 on the LMArena text leaderboard with a rating of 1282.
LMArena text1282−2 in 30 days
Rank#270/351
95% interval1268–1296
Votes2K
- Developer
- Inception
- Released
- Nov 16, 2025
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Proprietary
- Inputs
- —
- Reasoning
- —
- Tool use
- —
LatestMercury 1282
The rating LMArena published at each update since Nov 16, 2025. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1282 | 270 / 351 | 2K |
| CodingLMArena | 1323 | 240 / 346 | 412 |
| Creative writingLMArena | 1189 | 316 / 349 | 295 |
| Instruction followingLMArena | 1240 | 289 / 351 | 589 |
| Hard promptsLMArena | 1285 | 258 / 351 | 1.1K |
| Multi-turnLMArena | 1282 | 263 / 349 | 333 |
| Long queriesLMArena | 1264 | 279 / 330 | 521 |
| Business and financeIndustries | 1290 | 243 / 344 | 359 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Mercury
Inception
Builds Mercury, diffusion language models that generate text in parallel. Founded 2024, based in Palo Alto. inceptionlabs.ai
Questions
Who makes Mercury?
Mercury is made by Inception, founded 2024 and based in Palo Alto.
How does Mercury rank?
#270 of 351 on LMArena’s text leaderboard, rated 1282 (95% interval 1268–1296) from 1,964 votes, as of Oct 22, 2026.
Is Mercury open source?
No. Mercury is proprietary and served through its provider’s API.