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Inflection 3 Pi

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Inflection 3 Pi powers personal, text-based AI conversations.

InflectionLanguage ModelsClosed
Model page
Updated 2026-06-15

About Inflection 3 Pi

Inflection 3 Pi is a proprietary LLM developed by Inflection for conversational use. It processes text only and maintains an 8000-token context limit. The model remains closed-weight with no public parameter count disclosed.

Its design emphasizes coherent multi-turn dialogue within the given context size. Typical usage includes personal assistance tasks where users seek ongoing text exchanges rather than specialized technical workloads.

Capabilities

Empathetic conversation
Personal advice and coaching
General knowledge Q&A
Creative text generation
Task planning assistance

How Inflection 3 Pi compares

Inflection 3 Pi (striped bar) vs other language models on intelligence, speed and price.

Price

USD per 1M output tokens · Lower is better · Inflection 3 Pi ranks #139 of 141

$6.0
Palmyra X5
$6.0
Mistral Large 2407
$6.0
Mistral Large
$6.0
Mixtral 8x22B Instruct
$6.2
Qwen3.6 Max Preview
$8.0
Jamba Large 1.7
$8.0
Aion-1.0
$8.0
Sonar Deep Research
$10.0
Command A
$10.0
GPT-4o Search Preview
$10.0
Inflection 3 Pi
$10.0
Inflection 3 Productivity
$30.0
GPT-4 Turbo Preview

Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).

Best for

Emotional Support Conversations

The model excels in empathetic conversation, offering supportive responses for users navigating personal difficulties or seeking understanding.

Personal Coaching Sessions

It provides personal advice and coaching to help individuals set goals, reflect on progress, and address life challenges.

Daily Task Organization

Users receive task planning assistance to break down goals into actionable steps and improve productivity.

Strengths & limitations

Strengths

  • +Natural and engaging dialogue
  • +Strong focus on emotional intelligence
  • +Safety-aligned and supportive responses

Limitations

  • Moderate 8k context window
  • Text-only modality
  • Less specialized for technical or coding tasks

Cost calculator

Estimate what Inflection 3 Pi would cost for your usage.

$0.00750
per request
$75
estimated / month

Based on Inflection 3 Pi's $2.50/1M input · $10.00/1M output. Estimate only — actual cost varies by provider and caching.

Quick start

OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.

JavaScript · openai
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://openrouter.ai/api/v1",
  apiKey: process.env.OPENROUTER_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "inflection/inflection-3-pi",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

Model slug: inflection/inflection-3-pi

Editor's verdict

Our take on Inflection 3 Pi

Inflection 3 Pi is Inflection's proprietary language models with a 8K-token context window.

At $10.00 per 1M output tokens, it is premium-priced for its class.

It is available through Inflection's API and aggregators like OpenRouter.

Best suited to natural and engaging dialogue and strong focus on emotional intelligence.

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Frequently asked questions

Inflection 3 Pi supports a context length of 8000 tokens.

User reviews

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Other Inflection models

Sibling versions in the Inflection family from Inflection.

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