Understanding AI Temperature Settings

What is Temperature?

Temperature controls how creative or predictable your AI bot's responses are. It's a number typically between 0 and 1 (some models allow up to 2).

| Temperature | Behavior | |-------------|----------| | 0 | Most predictable, consistent | | 0.3-0.5 | Balanced, slight variation | | 0.7-0.9 | Creative, varied responses | | 1.0+ | Highly random, unpredictable |

How Temperature Works

Low Temperature (0-0.3)

The AI chooses the most likely response.

Characteristics:

• Consistent answers to same questions
• Factual, straightforward
• Less creative
• Better for support/FAQ bots

Example prompt: "What is 2+2?"

Temperature 0: "4"
Temperature 0: "4"
Temperature 0: "4"

Medium Temperature (0.4-0.7)

Balanced between consistency and creativity.

Characteristics:

• Some variation in phrasing
• Maintains accuracy
• Natural conversation flow
• Good for general chatbots

Example prompt: "How are you?"

Temperature 0.5: "I'm doing well, thanks for asking!"
Temperature 0.5: "I'm great! How can I help you today?"
Temperature 0.5: "Doing fine, thank you! What's on your mind?"

High Temperature (0.8-1.0+)

The AI explores less likely responses.

Characteristics:

• Creative and varied
• May produce unexpected answers
• Better for creative writing
• Can introduce errors

Example prompt: "Write a greeting"

Temperature 1.0: "Salutations, fellow traveler of the digital realm!"
Temperature 1.0: "Hey there! Ready to make some magic happen?"
Temperature 1.0: "Greetings and welcome aboard!"

Recommended Settings by Use Case

| Use Case | Temperature | Why | |----------|-------------|-----| | Customer Support | 0.2-0.4 | Consistent, accurate answers | | General Chat | 0.5-0.7 | Natural but reliable | | Community Bot | 0.6-0.8 | Engaging personality | | Creative Writing | 0.8-1.0 | Maximum creativity | | Code Assistance | 0.2-0.4 | Accurate, consistent code | | Roleplay | 0.7-0.9 | Creative storytelling |

Configuring Temperature

OpenClaw

In your .env file:

AI_TEMPERATURE=0.7

Or in config:

{
  "ai": {
    "temperature": 0.7
  }
}

OpenClaw

In your .env file:

AI_TEMPERATURE=0.7
DEFAULT_TEMPERATURE=0.7

Or in config file:

module.exports = {
  ai: {
    temperature: 0.7,
    // Per-provider settings
    anthropic: { temperature: 0.7 },
    openai: { temperature: 0.7 }
  }
};

Per-Channel Settings

Some setups allow channel-specific temperatures:

CHANNEL_123456_TEMPERATURE=0.3  # Support channel - consistent
CHANNEL_789012_TEMPERATURE=0.8  # Creative channel - varied

Other Related Settings

Top-P (Nucleus Sampling)

Controls diversity through probability threshold.

| Top-P | Effect | |-------|--------| | 0.1 | Very focused, limited vocabulary | | 0.5 | Moderate diversity | | 0.9 | High diversity | | 1.0 | Consider all options |

Recommendation: Use either temperature OR top-p, not both.

AI_TOP_P=0.9

Max Tokens

Limits response length.

AI_MAX_TOKENS=500

Frequency Penalty

Reduces repetition of words.

AI_FREQUENCY_PENALTY=0.5

Presence Penalty

Encourages new topics.

AI_PRESENCE_PENALTY=0.5

Finding Your Ideal Temperature

Step 1: Start with Default

Most chatbots work well at 0.7.

Step 2: Test with Real Prompts

Send the same message multiple times:

• Are responses too similar? Increase temperature.
• Are responses too random? Decrease temperature.

Step 3: Adjust by 0.1 Increments

Make small changes and test again.

Step 4: Consider Context

Different situations may need different settings:

• Factual questions → lower temperature
• Creative requests → higher temperature

Common Problems

Responses Too Repetitive

Symptom: Bot gives same answer every time

Fix: Increase temperature

AI_TEMPERATURE=0.8  # Up from 0.5

Responses Too Random

Symptom: Bot gives irrelevant or nonsensical answers

Fix: Decrease temperature

AI_TEMPERATURE=0.5  # Down from 0.9

Factual Errors

Symptom: Bot makes up information

Fix: Lower temperature for accuracy

AI_TEMPERATURE=0.3

Also consider improving your system prompt.

Inconsistent Personality

Symptom: Bot's tone changes randomly

Fix: Lower temperature and refine system prompt

AI_TEMPERATURE=0.5

Temperature + System Prompts

Your system prompt matters as much as temperature:

Strong prompt + Low temp = Consistent, on-brand responses

Weak prompt + High temp = Unpredictable, off-topic responses

Example improvement:

Before: "You are a helpful assistant."

After: "You are Luna, a friendly and enthusiastic community helper.
You speak casually but respectfully. You use occasional emojis.
You always stay positive and encouraging."

A detailed prompt reduces the need for high temperature.

Testing Your Settings

Create Test Scenarios

1. Greeting: "Hello!"
2. Question: "What can you do?"
3. Follow-up: "Tell me more about that"
4. Edge case: "This is a weird question..."
5. Repeated: Same question 5 times

Evaluate Responses

• Are they appropriate?
• Is there enough variation?
• Does personality stay consistent?
• Are factual answers accurate?

Related Guides

• OpenClaw system prompts
• OpenClaw personality config
• AI API costs

Need Help?

Our premium setup includes optimized temperature and prompt configuration for your specific use case.