MODELS / POOLSIDE

Laguna S 2.1

Laguna S 2.1 is Poolside's new open-weight model for agentic coding and long-horizon work.

TEXTREASONINGREASONINGTOOL-USE
1M
CONTEXT WINDOW
131.1K
MAX OUTPUT TOKENS
$0.1
INPUT PRICE / 1M TOKENS
$0.2
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/poolside/laguna-s-2.1",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything Laguna S 2.1 supports, in one table.

MODEL ID
blackboxai/poolside/laguna-s-2.1
DEVELOPED BY
Poolside
MODEL TYPE
Text
RELEASED
Jul 20, 2026
CONTEXT WINDOW
1M
MAX OUTPUT TOKENS
131.1K
INPUT MODALITIES
text
OUTPUT MODALITIES
text
INPUT PRICE
$0.1 / 1M tokens
OUTPUT PRICE
$0.2 / 1M tokens
CACHE READ
$0.01 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Not available (closed-weight model)
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning