Author's Description
Mercury Coder is the first diffusion large language model (dLLM). Applying a breakthrough discrete diffusion approach, the model runs 5-10x faster than even speed optimized models like Claude 3.5 Haiku...
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
Inception's Mercury Coder, a novel diffusion large language model, demonstrates exceptional speed and competitive pricing, consistently ranking in the Infinityth percentile across multiple benchmarks for both metrics. Its reliability is strong, with an 84% success rate across seven benchmarks, indicating consistent operational performance. Mercury Coder excels in speed across various tasks, notably achieving top-tier performance in Hallucinations (32793ms), General Knowledge (89846ms), Ethics (47743ms), and Coding (60827ms), even securing the #1 spot and "Speed Champion" designation in Ethics with near-perfect accuracy. This speed is a core strength, enabling rapid iteration and responsive interactions. While its speed and cost-efficiency are standout features, the model exhibits varied accuracy across categories. It performs well in Hallucinations (96.0%) and Ethics (98.0%), but shows moderate performance in General Knowledge (93.5%), Instruction Following (54.0%), and Coding (80.0%). A significant weakness is observed in Mathematics, where it scored 0.0% accuracy, suggesting a critical area for improvement. Email Classification also shows room for growth at 92.0% accuracy. Overall, Mercury Coder's breakthrough speed and cost-effectiveness make it a compelling option, particularly for applications where rapid response times are paramount, though its mathematical capabilities require further development.
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $0.25 |
| Completion | $0.75 |
| Input Cache Read | $0.025 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
Inception
|
Inception | inception/mercury-coder-small-beta | 128K | $0.25 / 1M tokens | $0.75 / 1M tokens |
Benchmark Results
| Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
|---|
Other Models by inception
|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| Inception: Mercury 2 Unavailable | Mar 04, 2026 | — | 128K |
Text input
Text output
|
★★★★★ | ★★ | $$$ |
| Inception: Mercury 2 | Mar 04, 2026 | — | 128K |
Text input
Text output
|
★★★★★ | ★★ | $$$ |
| Inception: Mercury | Jun 26, 2025 | — | 128K |
Text input
Text output
|
★★★★★ | ★★ | $$$$$ |