Mercury
Key facts · verified Oct 29, 2026
Mercury is an Inception AI model. Its API price is $0.25 per million input tokens and $0.75 per million output tokens (as listed by arena.ai; not published by Inception). Its context window is 128K tokens. It ranks #283 on LMArena's text leaderboard (Elo 1306, read 2 Nov 2026). Source: inceptionlabs.ai.
Mercury is a model from Inception AI with a 128K-token context window. Inception no longer lists it on its models page and states that Mercury 1, 2 and Mercury Edit 2 remain supported for existing customers; its current models are Mercury 2.5 and Mercury Voice. arena.ai lists pricing of $0.25 per million input tokens and $0.75 per million output tokens, a price Inception no longer publishes. On LMArena's text leaderboard: 1306 Elo (rank 283).
Full Specifications
$0.25 / $0.75 per million tokens | |
|---|---|
| Identity | |
| Developer | Inception AI |
| Status | Not listed on Inception's models page; Inception states it remains supported for existing customers. |
| Licence | Proprietary |
| Self-hostable | No |
| Cost | |
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $0.375 / 1M tokens |
| Input price | $0.250 / 1M tokens |
| Output price | $0.750 / 1M tokens |
| Capacity | |
| Context window | 128K tokens |
| Measured quality | |
| LMArena Elo | 1306 (checked Nov 2026) |
| LMArena rank | Rank 283 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 3483 |