OpenClaw API Costs: $1 to $400/Month, Here Is Why (2026)
Key Facts:
- OpenClaw API costs depend entirely on which AI model you use. The framework itself is free
- Budget models (GPT-4o-mini, Gemini Flash) cost ~$0.001 per message, about $1/month at 1,000 messages
- Premium models (Claude Opus) cost ~$0.14 per message, about $140/month at 1,000 messages
- All OpenClaw hosting uses BYOK (Bring Your Own Key). You pay Anthropic, OpenAI, or Google directly with no markup
The biggest cost of running OpenClaw is not the server. It is the AI model API. Every message your bot processes gets sent to an AI provider (Anthropic, OpenAI, or Google), and they charge you based on usage. The model you choose determines whether your monthly bill is $1 or $400.
This guide covers exact API pricing for every model OpenClaw supports, with real usage scenarios so you can estimate your costs before committing.
How OpenClaw API Billing Works
OpenClaw is a framework, not an AI model. When someone sends a message to your bot on WhatsApp, Telegram, or Discord, OpenClaw routes that message to an AI provider's API. The provider processes it and returns a response. You pay the provider for every message processed.
Billing is based on tokens, not messages. A token is roughly 3/4 of a word. A typical chatbot conversation uses about 3,000 tokens (input + output combined), though this varies with conversation length and complexity.
All OpenClaw hosting options use BYOK (Bring Your Own Key). You create an account with Anthropic, OpenAI, or Google, get an API key, and enter it in your setup. Your usage goes directly to your provider account. No hosting provider, including RunMyClaw, marks up your API costs.
Current API Pricing (February 2026)
Anthropic (Claude Models)
| Model | Input (per 1M tokens) | Output (per 1M tokens) | ~Cost per Message | Quality |
|---|---|---|---|---|
| Claude Haiku 4.5 | $0.80 | $4.00 | ~$0.007 | Good for simple tasks |
| Claude Sonnet 4.6 | $3.00 | $15.00 | ~$0.03 | Excellent all-rounder |
| Claude Opus 4.6 | $15.00 | $75.00 | ~$0.14 | Best reasoning, highest cost |
Anthropic's billing: Pay-as-you-go with no minimum. Set spend limits in the Anthropic Console. Free tier available for testing (limited rate).
Best value pick. Claude Sonnet 4.6, strong enough for most tasks and 5x cheaper than Opus.
OpenAI (GPT Models)
| Model | Input (per 1M tokens) | Output (per 1M tokens) | ~Cost per Message | Quality |
|---|---|---|---|---|
| GPT-4o-mini | $0.15 | $0.60 | ~$0.001 | Good for simple conversations |
| GPT-4o | $2.50 | $10.00 | ~$0.02 | Strong general-purpose |
| GPT-5.2 | $2.50 | $10.00 | ~$0.02 | Latest flagship |
OpenAI's billing: Pay-as-you-go, credit-based. Purchase credits in the OpenAI dashboard. Set monthly spend limits and email alerts.
Best value pick: GPT-4o-mini for budget use, GPT-4o for quality.
Google (Gemini Models)
| Model | Input (per 1M tokens) | Output (per 1M tokens) | ~Cost per Message | Quality |
|---|---|---|---|---|
| Gemini 3 Flash | $0.10 | $0.40 | ~$0.001 | Fast and cheap |
| Gemini 2.5 Pro | $2.50 | $15.00 | ~$0.03 | Strong reasoning |
Google's billing: Pay-as-you-go through Google Cloud. Free tier generous for testing. Set budget alerts in Cloud Console.
Best value pick: Gemini 3 Flash is the cheapest usable model available. Gemini 2.5 Pro competes with Claude Sonnet.
Monthly Cost Scenarios
Here is what your API bill looks like at different usage levels:
Light Use: 300 Messages/Month
Personal bot, occasional conversations.
| Model | Monthly API Cost |
|---|---|
| GPT-4o-mini | $0.30 |
| Gemini 3 Flash | $0.30 |
| GPT-4o | $6.00 |
| Claude Sonnet 4.6 | $9.00 |
| Claude Opus 4.6 | $42.00 |
Moderate Use: 1,000 Messages/Month
Regular personal use or small team bot.
| Model | Monthly API Cost |
|---|---|
| GPT-4o-mini | $1.00 |
| Gemini 3 Flash | $1.00 |
| GPT-4o | $20.00 |
| Claude Sonnet 4.6 | $30.00 |
| Claude Opus 4.6 | $140.00 |
Heavy Use: 3,000 Messages/Month
Active business bot or community agent.
| Model | Monthly API Cost |
|---|---|
| GPT-4o-mini | $3.00 |
| Gemini 3 Flash | $3.00 |
| GPT-4o | $60.00 |
| Claude Sonnet 4.6 | $90.00 |
| Claude Opus 4.6 | $420.00 |
Mixed Models: The Realistic Scenario
Most users don't stick to a single model. A common pattern:
- GPT-4o-mini or Gemini Flash for casual conversations (80% of messages)
- Claude Sonnet or GPT-4o for important conversations (15%)
- Claude Opus for complex analysis (5%)
At 1,000 messages/month with this mix:
- 800 messages x GPT-4o-mini ($0.001) = $0.80
- 150 messages x Claude Sonnet ($0.03) = $4.50
- 50 messages x Claude Opus ($0.14) = $7.00
- Total: ~$12.30/month
This mixed approach gives you access to the best models when needed while keeping your average cost low.
How to Reduce API Costs
1. Start with budget models
GPT-4o-mini and Gemini 3 Flash handle most casual conversations well. Only upgrade to premium models when you notice quality gaps for specific tasks.
2. Use model routing
OpenClaw lets you configure different models for different purposes. Use a cheap model as your default and switch to a premium model only for tasks that need it.
3. Set billing alerts
Every provider lets you set spending limits and email alerts. Do this immediately after creating your API key. A misconfigured bot or unexpected message surge can run up costs quickly.
- Anthropic: Set spend limits in the Anthropic Console under Settings → Billing
- OpenAI: Set monthly budget caps in the OpenAI dashboard under Settings → Limits
- Google: Set budget alerts in Google Cloud Console under Billing → Budgets
4. Monitor conversation length
Longer conversations use more tokens and cost more. If your bot is having unnecessarily long exchanges, adjust your system prompt to give concise responses.
5. Avoid Claude Opus for routine tasks
Opus is incredibly capable but costs 5x more than Sonnet per message. Reserve it for tasks where reasoning quality genuinely matters: complex analysis, code review, detailed writing. Use Sonnet or GPT-4o for everything else.
API Costs vs Hosting Costs
To put API costs in perspective, here is the total monthly cost (hosting + API) for each approach:
| Scenario | Self-Hosted ($10 VPS) | RunMyClaw ($30) | xCloud ($24) |
|---|---|---|---|
| Light (budget model, 300 msg) | $10.30 | $30.30 | $24.30 |
| Moderate (Sonnet, 1,000 msg) | $40.00 | $60.00 | $54.00 |
| Heavy (mixed, 3,000 msg) | $72.30 | $92.30 | $86.30 |
| Premium (Opus, 1,000 msg) | $150.00 | $170.00 | $164.00 |
At moderate-to-heavy usage, the hosting cost becomes a small fraction of your total bill. The API model you choose matters far more than which hosting provider you use.
Frequently Asked Questions
How much does it cost to run Claude on OpenClaw?
Claude Sonnet 4.6 costs about $0.03 per message ($30/month at 1,000 messages). Claude Opus 4.6 costs about $0.14 per message ($140/month at 1,000 messages). Claude Haiku 4.5 costs about $0.007 per message (~$7/month at 1,000 messages). These are API costs only. Hosting is separate.
Which AI model is cheapest for OpenClaw?
GPT-4o-mini ($0.001/message) and Gemini 3 Flash ($0.001/message) are the cheapest options. At 1,000 messages per month, either costs about $1. They handle simple conversations well but lack the reasoning depth of premium models.
Do I pay API costs on top of hosting?
Yes. All OpenClaw hosting uses BYOK (Bring Your Own Key). Your hosting fee covers the server infrastructure. API costs are separate. You pay Anthropic, OpenAI, or Google directly based on your usage. No hosting provider marks up API costs.
Can I set a monthly spending limit on API costs?
Yes. All three providers offer spending limits: Anthropic has spend caps in their Console, OpenAI has monthly budget limits in their dashboard, and Google Cloud has budget alerts. Set these up immediately when you create your API key.
How many tokens does a typical chatbot message use?
A typical exchange uses about 3,000 tokens (input + output). Short messages (quick questions and answers) might use 500-1,000 tokens. Complex conversations with context can use 5,000-10,000+ tokens. The per-message costs in this guide assume ~3,000 tokens as an average.
Is it cheaper to use one model or mix models?
Mixing models is almost always cheaper. Use a budget model (GPT-4o-mini) for 80% of routine messages and switch to a premium model (Claude Sonnet) for the 20% that need quality. This can reduce your API bill by 60-80% compared to running a premium model for everything.
What happens if I run out of API credits?
Your bot stops responding to messages until you add more credits or raise your spending limit. Messages sent during the outage are not processed. They do not queue up. Set billing alerts to avoid this.
The Bottom Line
Your OpenClaw API bill is determined by two things: which model you choose and how many messages your bot processes. Budget models cost $1-3/month for typical use. Premium models cost $30-140+/month at the same volume. The smartest approach is to mix models: cheap for routine conversations, premium when quality matters.
For the full picture including hosting costs, see our OpenClaw cost breakdown. To understand your hosting options, check out OpenClaw pricing or RunMyClaw vs xCloud vs self-hosted.
Ready to run OpenClaw? Start with RunMyClaw for $30/month. Bring your own API key, dedicated server, zero maintenance.