Measured on Composite
This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.
AI model
Inception: Mercury 3
inception/mercury-3
Inception: Mercury 3 is a 1,000,000-token model served on Composite at $0.125 per million tokens in and $0.438 per million tokens out.
Try in PlaygroundSpecifications
| Model ID | inception/mercury-3 |
|---|---|
| Provider | cv11 |
| Context window | 1,000,000 tokens |
| Accepts | text |
| Returns | text |
| Input price | $0.125 per million tokens |
| Output price | $0.438 per million tokens |
| Prompt caching | Supported — cached input is billed at the provider's cache rate, on credits and plans alike |
| Thinking | Optional - see "Inception: Mercury 3 (Reasoning)" in the catalog to turn it on by default |
| Moderated | No |
| Cost on a monthly plan | About 1.1 plan credits per typical call (8k in, 1k out) |
| Routing endpoints | 2 (base plus 1 routing variant) |
Routing variants
The same model behind 1 alternative endpoint. Call the id directly to pin a route; the base id above picks for you.
| Route | Model ID | Provider | Price |
|---|---|---|---|
| cheapThink | inception/mercury-3:cheapThink |
cv11 | $0.125 per million tokens input · $0.438 per million tokens output |
Pricing
$0.125 per million tokens input · $0.438 per million tokens output
Credits pay the provider’s price plus 25%; cache hits cost less.
On a monthly plan, a typical call (8k tokens in, 1k out) uses about 1.1 plan credits, at the provider's own price.
Provider
cv11
Roleplay fit
This model is available on Composite alongside dozens of others from other labs, so it is easy to compare against similar options.
Context behavior
With a 1,000,000-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.
Cost for regular use
It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.
From the provider
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date. It is suited for agentic workflows and real-time applications where latency compounds, such...
Supplied by cv11, not written by Composite.
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