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  1. Home
  2. Models
  3. Mercury 2.5
Updated Sep 22, 2026
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Openings

How Mercury 2.5 starts an answer

The first lines of every written answer it has on Rival. Formatting stripped, words untouched.

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

572 words
For the Experienced Software Engineer Think of the model as a stateless microservice that has ingested the entire public internet as its training dataset. During the training phase, it performs a massive distributed optimization job, adjusting internal weights to minimize a loss function based on next-token prediction.
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

190 words
Pantry Pasta Primavera Prep Time: 5 minutes Cook Time: 15 minutes Servings: 2 Ingredients (7 Common Pantry Items) Pasta (spaghetti, penne, or fusilli) – 8 oz Canned crushed tomatoes – 1 can (14 oz) Olive oil – 3 tablespoons Garlic powder – 1 teaspoon Dried oregano – 1 teaspoon Parmesan cheese (grated) – ½ cup Salt and…
Read the full answer

Compare Mercury 2.5

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Mercury 2.5 vs MiMo-V2.6-Pro3 shared prompts · Landed Sep 2026
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Mercury 2.5 vs MiMo-V2.6-Flash3 shared prompts · Landed Sep 2026
Mercury 2.5 vs Nemotron 3 Nano Omni (free)3 shared prompts · Landed Sep 2026
Mercury 2.5 vs Ling 3.0 Flash Fin (free)3 shared prompts · Landed Sep 2026
Mercury 2.5 vs Ling 3.0 Flash Sante (free)3 shared prompts · Landed Sep 2026

Prompts Mercury 2.5 answered

  • Simple 7-Ingredient Recipeconversation
  • Explain Like I'm a Specific Expertreasoning

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Mercury 2.5

Mercury 2.5

Inception Mercury 2.5 is a diffusion-based language model for text and code generation, with a 260K context window on OpenRouter.

OpenRouterDocs
Provider
Inception
Released
2026-09-08
Size
LARGE
Free API (OpenRouter)
No
Per 1M tokens
$0.04 in · $0.15 out
Rival’s tab
$0.00028
3/3 receipts survived

Free API availability

No free endpoint for Mercury 2.5 was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 22 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"inception/mercury-2.5"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Favorites

The Matrix

Movie

The Matrix

19998.3

Model Responses

2 outputs · $0.00024 tracked across 2 receipts

Workshop · 146 skills

A workflow for your next project.

Writing and research skills with working examples.

Explore $79Free sample

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Mercury 2.5 vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...