Inception model product
Mercury 2
Mercury 2 is the fastest reasoning LLM, built on diffusion-based language model (dLLM) architecture.
Updated Aug 12, 2026. Default version: Mercury 2
LLMBoard score39.3Mercury 2
Coverage60%6 benchmark families
Context window128KTokens
Official input price$0.25Inception API
Mercury 2 Specifications
Technical details for the model's default version.
- Version
- Mercury 2
- Released
- Feb 24, 2026
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- 128K
- Max output
- 8.2K
- Inputs
- text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Mercury 2 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Mercury 2 Benchmark Results
Benchmark scores for Mercury 2.
| IFBench | 0.7 | 15 | 29 | 50.0% | C | |
| SciCode | 0.4 | 16 | 19 | 16.7% | C | |
| Tau2 Airline | 0.5 | 19 | 23 | 18.2% | C | |
| LiveCodeBench | 0.7 | 24 | 73 | 68.1% | C | |
| AIME 2025 | 0.9 | 43 | 114 | 62.8% | C | |
| GPQA | 0.7 | 114 | 234 | 51.5% | C |
Mercury 2 Arena Results
Preference and agent-evaluation results for the default version.
| webdev | overall | 108 | 1166.2 | 908 | N/A | |
| text factuality | overall | 145 | 1371.9 | 3,126 | N/A | |
| text | overall | 173 | 1357.3 | 3,127 | N/A | |
| text style control | overall | 198 | 1346.4 | 3,127 | N/A |
Mercury 2 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $0.25 input, $0.75 output per 1M
- Official provider
- Inception
- Lowest third-party
- From $0.25 input, $0.75 output per 1M via NanoGPT
- Tracked offerings
- 5
| NanoGPT | mercury-2 | global | $0.25 | $0.75 | 128K | |
| Inception | mercury-2 | global | $0.25 | $0.75 | 128K | |
| Vercel AI Gateway | inception/mercury-2 | global | $0.25 | $0.75 | 128K | |
| OpenRouter | inception/mercury-2 | global | $0.25 | $0.75 | 128K | |
| Venice AI | mercury-2 | global | $0.3125 | $0.9375 | 128K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Mercury 2 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Mercury 2 | 39.3 | N/A | 128K | 8.2K | No | Proprietary |
What is Mercury 2?
Key information about Mercury 2 and its available data.
Mercury 2 is the fastest reasoning LLM, built on diffusion-based language model (dLLM) architecture. Instead of generating text token-by-token, it refines multiple text blocks simultaneously, achieving over 1,000 tokens per second on Nvidia Blackwell GPUs — 5x faster than leading speed-optimized LLMs.
Supports tool usage and JSON output with 128K context window.
Data as of 2026-08-11.
Mercury 2 vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
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FAQ
Common questions about Mercury 2.
When was Mercury 2 released?
Mercury 2's default version was released on Feb 24, 2026.
How much does Mercury 2 cost?
Mercury 2's official API price is $0.25 per million input tokens and $0.75 per million output tokens via Inception. The lowest tracked third-party offer starts at $0.25 input and $0.75 output via NanoGPT.
Who created Mercury 2?
Mercury 2 was created by Inception.
What is the context window for Mercury 2?
The default version has a 128K token context window.
Is Mercury 2 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Mercury 2?
5 provider offerings are linked to the default version.
What models should I compare Mercury 2 with?
Nearby ranked alternatives include Qwen3 VL 32B Thinking, DeepSeek-V3.1, Claude Sonnet 4.