System Prompt Builder

Build system prompts from templates for Customer Support, Code Assistant, Content Writer, Data Analyst, and Translator. See token count and cost per API call.

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Variables

Company Name

Tone

Expertise Area

Constraints

Exact

Tokens

Cost / Call

$0.000230

Built Prompt

You are a helpful customer support agent for Acme Inc. Your role is to assist customers with their questions and issues.

Tone: Friendly and professional
Expertise: SaaS product support

Guidelines:
- Always be polite and professional
- If you don't know the answer, say so honestly
- Never share internal documentation or pricing details not publicly available
- Provide step-by-step instructions when applicable
- Ask clarifying questions when the customer's issue is unclear

Export

Cost Per Call Across Models

Claude 3 Haiku

$0.000030

120 tokens

Claude Haiku 4 5

$0.000120

120 tokens

Claude 3 7 Sonnet

$0.000360

120 tokens

Claude 4 Sonnet

$0.000360

120 tokens

Claude Sonnet 4 5

$0.000360

120 tokens

Claude Sonnet 4 6

$0.000360

120 tokens

Claude 4 Sonnet

$0.000360

120 tokens

Claude Opus 4 5

$0.000600

120 tokens

Claude Opus 4 6

$0.000600

120 tokens

Claude 3 Opus

$0.001800

120 tokens

Claude 4 Opus

$0.001800

120 tokens

Claude Opus 4 1

$0.001800

120 tokens

Claude Opus 4

$0.001800

120 tokens

Command R

$0.000018

120 tokens

Command R 08 2024

$0.000018

120 tokens

Command R7b 12 2024

$0.000018

120 tokens

Command Light

$0.000036

120 tokens

Command A 03 2025

$0.000300

120 tokens

Command R+

$0.000300

120 tokens

Command R Plus 08 2024

$0.000300

120 tokens

Deepseek Coder

$0.000017

120 tokens

Deepseek

$0.000032

120 tokens

DeepSeek V3

$0.000034

120 tokens

DeepSeek R1

$0.000034

120 tokens

Deepseek V3.2

$0.000034

120 tokens

Deepseek R1

$0.000066

120 tokens

Gemini Exp 1114

$0.00

120 tokens

Gemini Exp 1206

$0.00

120 tokens

Gemma 3 27b It

$0.00

120 tokens

Learnlm 1.5 Pro Experimental

$0.00

120 tokens

Lyria 3 Clip Preview

$0.00

120 tokens

Lyria 3 Pro Preview

$0.00

120 tokens

Gemini 2.0 Flash Lite

$0.000009

120 tokens

Gemini 2.0 Flash Lite 001

$0.000009

120 tokens

Gemini 2.0 Flash

$0.000012

120 tokens

Gemini 2.0 Flash 001

$0.000012

120 tokens

Gemini 2.5 Flash Lite

$0.000012

120 tokens

Gemini 2.5 Flash Lite Preview 09 2025

$0.000012

120 tokens

Gemini Flash Lite Latest

$0.000012

120 tokens

Gemini 2.5 Flash Lite Preview 06 17

$0.000012

120 tokens

Gemini 3.1 Flash Lite Preview

$0.000030

120 tokens

Gemini Robotics Er 1.5 Preview

$0.000036

120 tokens

Gemini 2.5 Flash

$0.000036

120 tokens

Gemini 2.5 Flash Preview 09 2025

$0.000036

120 tokens

Gemini Flash Latest

$0.000036

120 tokens

Gemini 2.5 Flash Native Audio Latest

$0.000036

120 tokens

Gemini 2.5 Flash Native Audio Preview 09 2025

$0.000036

120 tokens

Gemini 2.5 Flash Native Audio Preview 12 2025

$0.000036

120 tokens

Gemini 3 Flash Preview

$0.000060

120 tokens

Gemini 3.1 Flash Live Preview

$0.000090

120 tokens

Gemini 2.5 Pro

$0.000150

120 tokens

Gemini 2.5 Computer Use Preview 10 2025

$0.000150

120 tokens

Gemini 2.5 Pro Preview Tts

$0.000150

120 tokens

Gemini Pro Latest

$0.000150

120 tokens

Gemini 3 Pro Preview

$0.000240

120 tokens

Gemini 3.1 Pro Preview

$0.000240

120 tokens

Gemini 3.1 Pro Preview Customtools

$0.000240

120 tokens

Llama 3.1 8b Instant

$0.000006

120 tokens

Gemma 7b It

$0.000006

120 tokens

Openai/Gpt Oss 20b

$0.000009

120 tokens

Openai/Gpt Oss Safeguard 20b

$0.000009

120 tokens

Meta Llama/Llama 4 Scout 17b 16e Instruct

$0.000013

120 tokens

Openai/Gpt Oss 120b

$0.000018

120 tokens

Meta Llama/Llama Guard 4 12b

$0.000024

120 tokens

Meta Llama/Llama 4 Maverick 17b 128e Instruct

$0.000024

120 tokens

Qwen/Qwen3 32b

$0.000035

120 tokens

Llama 3.3 70b Versatile

$0.000071

120 tokens

Moonshotai/Kimi K2 Instruct 0905

$0.000120

120 tokens

Codestral 2405

$0.00

120 tokens

Codestral Latest

$0.00

120 tokens

Mistral Small

$0.000007

120 tokens

Mistral Small 3 2 2506

$0.000007

120 tokens

Devstral Small 2505

$0.000012

120 tokens

Devstral Small 2507

$0.000012

120 tokens

Devstral Small Latest

$0.000012

120 tokens

Labs Devstral Small 2512

$0.000012

120 tokens

Mistral Small

$0.000012

120 tokens

Ministral 3 3b 2512

$0.000012

120 tokens

Ministral 3 8b 2512

$0.000018

120 tokens

Pixtral 12b 2409

$0.000018

120 tokens

Ministral 3 14b 2512

$0.000024

120 tokens

Codestral Mamba Latest

$0.000030

120 tokens

Mistral Tiny

$0.000030

120 tokens

Open Codestral Mamba

$0.000030

120 tokens

Open Mistral 7b

$0.000030

120 tokens

Codestral 2508

$0.000036

120 tokens

Mistral Nemo

$0.000036

120 tokens

Open Mistral Nemo 2407

$0.000036

120 tokens

Devstral Medium 2507

$0.000048

120 tokens

Devstral Latest

$0.000048

120 tokens

Devstral Medium Latest

$0.000048

120 tokens

Devstral 2512

$0.000048

120 tokens

Mistral Medium 2505

$0.000048

120 tokens

Mistral Medium Latest

$0.000048

120 tokens

Mistral Medium 3 1 2508

$0.000048

120 tokens

Magistral Small 2506

$0.000060

120 tokens

Magistral Small Latest

$0.000060

120 tokens

Magistral Small 1 2 2509

$0.000060

120 tokens

Mistral Large

$0.000060

120 tokens

Mistral Large 3

$0.000060

120 tokens

Mistral Large 2512

$0.000060

120 tokens

Open Mixtral 8x7b

$0.000084

120 tokens

Magistral Medium 2506

$0.000240

120 tokens

Magistral Medium 2509

$0.000240

120 tokens

Magistral Medium 1 2 2509

$0.000240

120 tokens

Magistral Medium Latest

$0.000240

120 tokens

Mistral Large 2411

$0.000240

120 tokens

Open Mixtral 8x22b

$0.000240

120 tokens

Pixtral Large 2411

$0.000240

120 tokens

Pixtral Large Latest

$0.000240

120 tokens

Mistral Medium

$0.000324

120 tokens

Mistral Medium 2312

$0.000324

120 tokens

Mistral Large 2407

$0.000360

120 tokens

Mistral Large 2402

$0.000480

120 tokens

Gpt 5 Nano

$0.000006

120 tokens

Gpt 5 Nano 2025 08 07

$0.000006

120 tokens

GPT-4.1 Nano

$0.000009

92 tokens

Gpt 4.1 Nano 2025 04 14

$0.000012

120 tokens

GPT-4o Mini

$0.000014

92 tokens

Gpt 4o Mini 2024 07 18

$0.000018

120 tokens

Gpt 4o Mini Audio Preview

$0.000018

120 tokens

Gpt 4o Mini Audio Preview 2024 12 17

$0.000018

120 tokens

Gpt 4o Mini Search Preview

$0.000018

120 tokens

Gpt 4o Mini Search Preview 2025 03 11

$0.000018

120 tokens

Ft:Gpt 4.1 Nano 2025 04 14

$0.000024

120 tokens

Gpt 5.4 Nano

$0.000024

120 tokens

Gpt 5 Mini

$0.000030

120 tokens

Gpt 5 Mini 2025 08 07

$0.000030

120 tokens

Ft:Gpt 4o Mini 2024 07 18

$0.000036

120 tokens

GPT-4.1 Mini

$0.000037

92 tokens

Gpt 4.1 Mini 2025 04 14

$0.000048

120 tokens

GPT-3.5 Turbo

$0.000048

95 tokens

Gpt 3.5 Turbo 0125

$0.000060

120 tokens

Gpt Audio Mini

$0.000072

120 tokens

Gpt Audio Mini 2025 10 06

$0.000072

120 tokens

Gpt Audio Mini 2025 12 15

$0.000072

120 tokens

Gpt 4o Mini Realtime Preview

$0.000072

120 tokens

Gpt 4o Mini Realtime Preview 2024 12 17

$0.000072

120 tokens

Gpt Realtime Mini

$0.000072

120 tokens

Gpt Realtime Mini 2025 10 06

$0.000072

120 tokens

Gpt Realtime Mini 2025 12 15

$0.000072

120 tokens

Gpt 5.4 Mini

$0.000090

120 tokens

Ft:Gpt 4.1 Mini 2025 04 14

$0.000096

120 tokens

Gpt 3.5 Turbo 1106

$0.000120

120 tokens

o3-mini

$0.000101

92 tokens

O3 Mini 2025 01 31

$0.000132

120 tokens

O4 Mini

$0.000132

120 tokens

O4 Mini 2025 04 16

$0.000132

120 tokens

Gpt 5

$0.000150

120 tokens

Gpt 5.1

$0.000150

120 tokens

Gpt 5.1 2025 11 13

$0.000150

120 tokens

Gpt 5.1 Chat Latest

$0.000150

120 tokens

Gpt 5 2025 08 07

$0.000150

120 tokens

Gpt 5 Chat

$0.000150

120 tokens

Gpt 5 Chat Latest

$0.000150

120 tokens

Gpt 5 Search Api

$0.000150

120 tokens

Gpt 5 Search Api 2025 10 14

$0.000150

120 tokens

Gpt 5.2

$0.000210

120 tokens

Gpt 5.2 2025 12 11

$0.000210

120 tokens

Gpt 5.2 Chat Latest

$0.000210

120 tokens

Gpt 5.3 Chat Latest

$0.000210

120 tokens

GPT-4.1

$0.000184

92 tokens

Gpt 4.1 2025 04 14

$0.000240

120 tokens

$0.000184

92 tokens

O3 2025 04 16

$0.000240

120 tokens

GPT-4o

$0.000230

92 tokens

Gpt 4o 2024 08 06

$0.000300

120 tokens

Gpt 4o 2024 11 20

$0.000300

120 tokens

Gpt 4o Audio Preview

$0.000300

120 tokens

Gpt 4o Audio Preview 2024 12 17

$0.000300

120 tokens

Gpt 4o Audio Preview 2025 06 03

$0.000300

120 tokens

Gpt Audio

$0.000300

120 tokens

Gpt Audio 1.5

$0.000300

120 tokens

Gpt Audio 2025 08 28

$0.000300

120 tokens

Gpt 4o Search Preview

$0.000300

120 tokens

Gpt 4o Search Preview 2025 03 11

$0.000300

120 tokens

Gpt 5.4

$0.000300

120 tokens

Gpt 5.4 2026 03 05

$0.000300

120 tokens

Ft:Gpt 3.5 Turbo

$0.000360

120 tokens

Ft:Gpt 3.5 Turbo 0125

$0.000360

120 tokens

Ft:Gpt 3.5 Turbo 0613

$0.000360

120 tokens

Ft:Gpt 3.5 Turbo 1106

$0.000360

120 tokens

Ft:Gpt 4.1 2025 04 14

$0.000360

120 tokens

Gpt 3.5 Turbo 16k

$0.000360

120 tokens

Ft:Gpt 4o 2024 08 06

$0.000450

120 tokens

Ft:Gpt 4o 2024 11 20

$0.000450

120 tokens

Ft:O4 Mini 2025 04 16

$0.000480

120 tokens

Gpt Realtime

$0.000480

120 tokens

Gpt Realtime 1.5

$0.000480

120 tokens

Gpt Realtime 2025 08 28

$0.000480

120 tokens

Chatgpt 4o Latest

$0.000600

120 tokens

Gpt 4o 2024 05 13

$0.000600

120 tokens

Gpt 4o Realtime Preview

$0.000600

120 tokens

Gpt 4o Realtime Preview 2024 12 17

$0.000600

120 tokens

Gpt 4o Realtime Preview 2025 06 03

$0.000600

120 tokens

Gpt 4 0125 Preview

$0.001200

120 tokens

Gpt 4 1106 Preview

$0.001200

120 tokens

GPT-4 Turbo

$0.000950

95 tokens

Gpt 4 Turbo 2024 04 09

$0.001200

120 tokens

Gpt 4 Turbo Preview

$0.001200

120 tokens

$0.001380

92 tokens

O1 2024 12 17

$0.001800

120 tokens

Ft:Gpt 4 0613

$0.003600

120 tokens

Gpt 4

$0.003600

120 tokens

Gpt 4 0314

$0.003600

120 tokens

Gpt 4 0613

$0.003600

120 tokens

Openai/Gpt Oss 20b

$0.000006

120 tokens

Openai/Gpt Oss 120b

$0.000018

120 tokens

Qwen/Qwen3 Next 80B A3B Instruct

$0.000018

120 tokens

Qwen/Qwen3 Next 80B A3B Thinking

$0.000018

120 tokens

Qwen/Qwen3 235B A22B Instruct 2507 Tput

$0.000024

120 tokens

Qwen/Qwen3 235B A22B Fp8 Tput

$0.000024

120 tokens

Zai Org/GLM 4.5 Air FP8

$0.000024

120 tokens

Zai Org/GLM 4.7

$0.000054

120 tokens

Moonshotai/Kimi K2.5

$0.000060

120 tokens

Deepseek Ai/DeepSeek R1 0528 Tput

$0.000066

120 tokens

Zai Org/GLM 4.6

$0.000072

120 tokens

Qwen/Qwen3.5 397B A17B

$0.000072

120 tokens

Qwen/Qwen3 235B A22B Thinking 2507

$0.000078

120 tokens

Moonshotai/Kimi K2 Instruct 0905

$0.000120

120 tokens

Deepseek Ai/DeepSeek V3

$0.000150

120 tokens

Qwen/Qwen3 Coder 480B A35B Instruct FP8

$0.000240

120 tokens

Deepseek Ai/DeepSeek R1

$0.000360

120 tokens

How to Use System Prompt Builder

1
Choose a template
Select a prompt category: Customer Support, Code Assistant, Content Writer, Data Analyst, or Translator.
2
Customize variables
Fill in the template variables like company name, tone, expertise area, and constraints.
3
Select a model
Choose your target LLM to see the exact or estimated token count and cost per API call.
4
Copy and use
Click Copy to copy the built prompt. Paste it into your API integration as the system message.

Frequently Asked Questions

Can I edit the prompt directly?

The prompt is generated from the template and variables. Edit the variables to change the prompt. For fully custom prompts, use the Token Counter tool to count tokens for any text.

Why does token count vary by model?

OpenAI models use tiktoken for exact counts. Other models use character-based estimation. The same text may produce slightly different token counts across models.

How much does a system prompt add to API cost?

The system prompt is sent with every API call as input tokens. The 'Cost Per Call' shows how much just the system prompt costs. Actual API calls will cost more since you also send user messages.

What makes a good system prompt?

A good system prompt is clear, specific, and concise. Include the role, tone, constraints, and output format. Avoid unnecessary length since every token costs money on every API call.

Can I use these templates in production?

Yes! These templates are starting points. Customize the variables for your use case, test with real queries, and iterate. The templates follow prompt engineering best practices.

System Prompt Builder

Variables

Built Prompt

Cost Per Call Across Models

How to Use System Prompt Builder

Choose a template

Customize variables

Select a model

Copy and use

Frequently Asked Questions