MODELS / INCEPTION

Mercury 2.5

Mercury 2.5 is Inception’s diffusion-based reasoning model for chat, agents, and structured workflows, with tool calling, structured outputs, and a 260K context window.

TEXTREASONINGIMPLICIT-CACHINGREASONINGTOOL-USE
260K
CONTEXT WINDOW
65.5K
MAX OUTPUT TOKENS
$0.04
INPUT PRICE / 1M TOKENS
$0.15
OUTPUT PRICE / 1M TOKENS
QUICKSTART

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/inception/mercury-2.5",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything Mercury 2.5 supports, in one table.

MODEL ID
blackboxai/inception/mercury-2.5
DEVELOPED BY
Inception
MODEL TYPE
Text
RELEASED
Sep 8, 2026
CONTEXT WINDOW
260K
MAX OUTPUT TOKENS
65.5K
INPUT MODALITIES
text
OUTPUT MODALITIES
text
INPUT PRICE
$0.04 / 1M tokens
OUTPUT PRICE
$0.15 / 1M tokens
CACHE READ
$0.004 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Not available (closed-weight model)
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning