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Model

Rnj 1 Instruct

EssentialAI Rnj 1 Instruct — pricing, 33k context window, API cost calculator and alternatives.

By EssentialAI

🔧 Tools Function calling — the model can structure responses as tool calls with typed arguments. Reliability differs between providers. Glossary → {} JSON Forces output to be valid JSON, reducing parse errors. Some providers also let you constrain to a schema. Glossary →
Context window Maximum tokens (input + output) the model can process in a single request. Glossary →
32,768
tokens
Input price What the model charges for tokens you send (prompt + context). Glossary →
$0.1500
per 1M tokens
Output price What the model charges for tokens it generates. Usually 3–5× pricier than input. Glossary →
$0.1500
per 1M tokens

Specs

Provider
EssentialAI
Slug
essentialai/rnj-1-instruct
Capabilities
tools, json_mode

Pricing freshness

Tier
standard
Currency
USD
As of
2026-05-08 17:08 UTC
Estimate monthly cost → See alternatives to Rnj 1 Instruct →

Pricing history

Tracking Rnj 1 Instruct pricing since 2026-05-08. We'll plot the chart here once it changes.

Quickstart — call Rnj 1 Instruct from your app

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -d '{
    "model": "essentialai/rnj-1-instruct",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Official docs: https://openrouter.ai/docs

Related models

Similar capabilities, context window, and price tier — drawn from across the catalog so you can compare alternatives in one click.

Frequently asked questions

What is Rnj 1 Instruct?

Rnj 1 Instruct is a large language model API from EssentialAI with a 33k-token context window. It costs $0.15 per 1M input tokens and $0.15 per 1M output tokens.

How much does Rnj 1 Instruct cost?

Rnj 1 Instruct is priced at $0.15 per 1M input tokens and $0.15 per 1M output tokens via the EssentialAI API. A 50/50 input/output workload of 1M total tokens costs about $0.15.

What is the context window of Rnj 1 Instruct?

Rnj 1 Instruct supports up to 33k tokens of context per request — roughly 66 pages of English text or 4096 lines of code at a typical density.

Does Rnj 1 Instruct support vision, tool use, or JSON mode?

Rnj 1 Instruct supports tool/function calling and structured JSON mode. It does not support image input (vision).

Who makes Rnj 1 Instruct?

Rnj 1 Instruct is built and operated by EssentialAI. Pricing, context window, and capabilities on this page are refreshed nightly from EssentialAI's public catalog.

Can I self-host Rnj 1 Instruct?

Rnj 1 Instruct is API-only — its weights are not publicly distributed by EssentialAI, so it cannot be self-hosted today.

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