Inception: Mercury 2

Released Mar 4, 2026

inception/mercury-2

text→text

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Ranked in:Text WebDev

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OpenRouter

Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM). Instead of generating tokens sequentially, Mercury 2 produces and refines multiple tokens in parallel, achieving...

Best overall rank

#78

Across all subsets · overall

Total arena votes

19,880

Across 22 (subset, category) entries

Providers on OR

Inception

First seen

2026-05-08

26 days tracked

Trend

Pricing

Per token

Input (per 1M): $0.250
Output (per 1M): $0.750
Cache Read (per 1M): $0.025

Capabilities

Modality

text->text

Context

128K tokens

Tokenizer

Other

Max output

50K tokens

Moderation

Unmoderated

Supported parameters

include_reasoning

max_tokens

reasoning

response_format

stop

structured_outputs

temperature

tool_choice

tools

Providers

Provider	Region / Tag	Context	Input/M	Output/M	Uptime 1d	Latency	Quant	Cache
Inception	`inception`	128K	$0.250	$0.750	99.34%	-	-	-

Per-category ranks

Text

Rank	Category	Variant	Elo	Votes
#163	Coding	-	1396	768
#166	Multi Turn	-	1344	540
#167	Expert	-	1350	229
#168	Industry Entertainment And Sports And Media	-	1311	659
#168	Industry Software And It Services	-	1384	1,087
#172	English	-	1365	1,396
#172	Overall	-	1347	3,123
#173	Hard Prompts English	-	1371	865
#175	Hard Prompts	-	1359	1,759
#178	Exclude Ties	-	1299	2,172
#179	Industry Business And Management And Financial Operations	-	1338	478
#180	Instruction Following	-	1322	836
#182	Industry Medicine And Healthcare	-	1346	229
#190	Creative Writing	-	1300	530
#194	Industry Writing And Literature And Language	-	1309	696
#202	Russian	-	1305	360
#208	Longer Query	-	1324	844
#222	Industry Life And Physical And Social Science	-	1322	472

WebDev

Rank	Category	Variant	Elo	Votes
#65	Webdev-react	-	1155	845
#77	Webdev-html	-	1207	100
#78	Overall	-	1165	946
#78	Webdev	-	1165	946