Specification

Release date: 4 Mar 2026
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Openness: proprietary
Source:Artificial AnalysisT2observed 3 h agomedium
Context window: 128K tokens
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Max output: 50K tokens
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Modalities: text
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Input modalities: text
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Output modalities: text
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Aa median output tokens per second: 734
Source:Artificial AnalysisT2observed 3 h agomedium
Openrouter id: inception/mercury-2
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Supported parameters: include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, temperature, tool_choice, tools
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

14

Source tiers

T214

Freshest observation

3 h ago

Conflicts

None

Modalities

Modalities: text
Input: text
Output: text

Capabilities

Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Unavailable
Audio
Unavailable
Fine-tuning available
Unavailable

Context window: 128K tokens
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium
Max output: 50K tokens
Source:OpenRouter public model & pricing listingT2observed 4 h agomedium

Benchmark results
Benchmark	Score	Metric	Config	Evaluated	Source
τ²-bench	70.76%	pass^1	aa_slug=mercury-2 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
Artificial Analysis Intelligence Index	11.51	index	aa_slug=mercury-2 · version=4.3 · estimated=false	—	artificialanalysis.aiT2
GPQA	76.97%	accuracy	aa_slug=mercury-2 · variant=GPQA Diamond · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
Humanity's Last Exam	17.15%	accuracy	aa_slug=mercury-2 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
IFBench	69.8%	accuracy	aa_slug=mercury-2 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
SciCode	37.73%	accuracy	aa_slug=mercury-2 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
Terminal-Bench	26.52%	accuracy	aa_slug=mercury-2 · variant=hard · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
Terminal-Bench	27.34%	accuracy	aa_slug=mercury-2 · variant=v2.1 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2
Terminal-Bench	0%	accuracy	aa_slug=mercury-2 · variant=v4.0 · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2

Scores are reported as published, with their evaluation configuration (harness, prompting, judge). Results with different configs are not directly comparable — see methodology.

Current prices

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
OpenRouterinception/mercury-2	$0.25	$0.75	$0.025	—	128K	2 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Available through 1

OpenRouter

Price history

Input price · USD / 1M tokens

Output price · USD / 1M tokens

OpenRouter

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

12 claims · 12 properties

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
4 Mar 2026	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Context windowcontext_length1

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
128K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
50K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
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...	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
inception/mercury-2	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, temperature, tool_choice, tools	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 26.52% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 27.34% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 0% on Terminal-Bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 70.76% on τ²-bench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 69.8% on IFBench
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 37.73% on SciCode
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 17.15% on Humanity's Last Exam
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 76.97% on GPQA
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelMercury 2Inception
Mercury 2 scores 11.51 on Artificial Analysis Intelligence Index
artificial_analysis
artificialanalysis.ai
4 Mar 2026
New modelModelMercury 2Inception
New model: Mercury 2 (Inception)
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelMercury 2Inception
OpenRouter lists Mercury 2 at $0.25 in / $0.75 out per 1M tokens
openrouter
openrouter.ai

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	2 h ago	3
Artificial Analysis	artificialanalysis.ai/leaderboards/models	leaderboard	T2· Quality secondary	3 h ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.