How does Mercury 2 rank among AI models?
Mercury 2 is a superseded version and is not on the current board as of 22 September 2026. Its archive position, where one exists, is shown on the page; the newer version carries the current rank.
Inception Labs·inception/mercury-2
Mercury 2 is ModelCap archive rank #228 (Measured), from the ModelCap Index as of 22 Sept 2026, 02:49 UTC.
Mercury 2 listed OpenRouter input price is $0.25 per 1M tokens and listed output price is $0.75 per 1M tokens, from OpenRouter listed prices as of 22 Sept 2026, 02:49 UTC.
Mercury 2 has a published context limit of 128K tokens in the ModelCap catalogue as of 22 Sept 2026, 02:49 UTC.
Mercury 2 has 1 published OpenRouter serving endpoint, from OpenRouter as of 22 Sept 2026, 02:49 UTC.
Mercury 2 weight access is api only, from ModelCap classification of published repository metadata as of 22 Sept 2026, 02:49 UTC.
Snapshot facts · download the public dataset · methodology
ModelCap Index · All-versions archive
37.1#228
Measured · 46% support · score interval 30.8–43.4
Evidence as of 13 Sept 2026, 00:00 UTC
Superseded by Mercury 2.5. It no longer holds a current-board position; its all-versions archive rank is #228.
Input
$0.25
per 1M tokens
Output
$0.75
per 1M tokens
Context
128K
tokens
Providers
1
endpoint
Gateway spend
—
latest · Vercel share
Providers
Uptime measured over the last 30 minutesOther versions (2)
ModelCap Index · All-versions archive
Methodology37.1
Measured · 2 public benchmark observations across 2 boards
All-versions archive
#228
- Public rank basis
- Measured (measured)
- Index support
- 45.8% · moderate
- Index interval
- 30.8–43.4
- Rank posterior
- Not available
- Top 5 / Top 10 probability
- Not available / Not available
- Posterior as of
- Snapshot timestamp unavailable
- Evidence as of
- 13 Sept 2026, 00:00 UTC
- Identity binding
- Exact catalogue product · inception/inception/mercury-2 · aggregates disclosed benchmark configurations · endpoint configuration not claimed
- Index observations used
- 2
- Qualified Index evidence point
- 37.1
Bayesian Evidence Score · measured evidence input only
BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.
- Observed capability
- 37.1
- Evidence status
- confirmed · 72% mass
- General preference
- 37.3
- Coding
- 35.8
- Agents & tools
- —
- Reasoning
- —
- Evidence breadth
- 92%
- Evidence coverage
- 46%
Market and catalogue signals · secondary, never the language Index rank
- Usage (OpenRouter popularity)
- 9.1
- Liquidity (providers × uptime)
- 35.8
- Open reach (HF downloads)
- —
- Surface (context / tools / modalities)
- 70.0
- Freshness
- 46.4
- · OpenRouter popularity #190
- · 1 live provider
- · Catalogue: context 128000, reasoning, tools
- · First seen 2026-03-04
These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.
BES evidence selected · measured input only
- Arena Overall37.3
- Arena Coding35.8
The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.
Deployment readiness
Metadata index39.6
limited · 56% metadata coverage
- Artifact reproducibility
- 0.0
- Access & legal clarity
- 30.3
- Deployability
- 80.0
- Evaluation provenance
- 47.9
Missing: artifactReproducibility.revision-sha, artifactReproducibility.architecture-and-model-type, artifactReproducibility.parameter-count, artifactReproducibility.serialized-weight-format, artifactReproducibility.base-lineage, accessLegalClarity.declared-license, accessLegalClarity.resolvable-license-terms, evaluationProvenance.evaluation-dataset-revisions.
A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.
Market activity
Venue coverage- Market Gravity
- 23.8
- OpenRouter weekly popularity
- #190 of 322
Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.
Arena preference
- Status
- Ranked
- Source
- LMArena
- Official rank
- #211 of 402
- Rating
- 1346.3
- 95% confidence interval
- 1336–1357
- Votes
- 3K
- Source published at
- 13 Sept 2026, 00:00 UTC
- Category
- overall
- Identity match confidence
- 100%
Market Gravity breakdown
- Usage55%
- 9.1
- Liquidity25%
- 35.8
- Open reach15%
- 50.0
- Freshness5%
- 46.4
OpenRouter weekly popularity across the full model catalogue.
Independent providers versus the model's open or closed cohort, weighted by uptime.
Hugging Face 30-day downloads for open models; neutral for closed models.
Time since first public availability, on a six-month half-life.
Specification
- Context window
- 128K tokens
- Max output
- 50K tokens
- Inputs
- Text
- Outputs
- Text
- Tokenizer
- Other
- Cached input tokens
- $0.025 / 1M
- First seen on OpenRouter
- 4 Mar 2026
Capabilities
- Supported: Reasoning
- Supported: Tool use
- Supported: Structured output
- Supported: Response format
- Not supported: Moderated
Benchmark leaderboards featuring Mercury 2
All leaderboardsMercury 2: common questions
How much does Mercury 2 cost per 1M tokens?
Mercury 2 is listed at $0.25 per 1M input tokens and $0.75 per 1M output tokens as of 22 September 2026. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $0.875 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.
What is the context window of Mercury 2?
Mercury 2 has a published context window of 128K tokens (128,000) and a maximum output of 50K tokens. Individual providers can serve less than the published maximum; the providers table lists each endpoint's own limit.
Is Mercury 2 open-weight?
API only. No downloadable model weights are linked in the current source data; access is through a hosted API or product.
Which API providers serve Mercury 2?
One provider serves Mercury 2 through OpenRouter as of 22 September 2026: Inception. Each provider's price, context limit, quantization and measured uptime are in the providers table above.
Which benchmarks has Mercury 2 been evaluated on?
Mercury 2 has published results on 3 public boards tracked by ModelCap as of 22 September 2026: Arena coding 1393 (#204 of 397), AA τ²-Bench Telecom 70.8% (#162 of 436) and AA Humanity's Last Exam 17.1% (#202 of 615). Each board page ranks every tracked model on that benchmark; the ModelCap Index combines them with published uncertainty.
When was Mercury 2 released?
Mercury 2 first appeared in the catalogue on 4 Mar 2026. It has since been superseded by Mercury 2.5. Rank and price movements since then are recorded on the site's changes feed.