The Quick Answer
For most people: Claude Sonnet 4.6. At $3 input / $15 output per million tokens and a 79.6% SWE-bench score, it's the best blend of agentic reliability, tool-calling quality, and price for a daily-driver assistant. It's what we configure by default in our done-for-you setups, and it's what most of the OpenClaw community runs.
But "most people" isn't everyone. If your workloads are heavy on long documents, multi-agent orchestration, or strict budgets, a different engine wins — and because OpenClaw (formerly Clawdbot, briefly Moltbot, renamed in January 2026) treats the model as a config setting, you can change your mind anytime.
Recommendations by Use Case
| Use Case | Best Pick | Why |
|---|---|---|
| Daily driver | Claude Sonnet 4.6 | Best capability-per-dollar; $3/$15 per MTok; 79.6% SWE-bench; excellent tool calling |
| Complex orchestration & multi-step agents | Claude Opus 4.6 / 4.7 | Strongest sustained reasoning across long agentic chains; worth the premium when steps compound |
| Computer use & browser tasks | GPT-5.4 / 5.5 | Strong showings on computer-use and agentic benchmarks; a credible Claude alternative |
| Research & large-context work | Gemini 3.1 Pro | Best for very large contexts at low cost — whole codebases, long PDFs, big mailbox digests |
| Tight budget | DeepSeek V3.2 | The budget pick — noticeably cheaper, good enough for routine automations and summaries |
| Privacy / fully local | Llama (local) | Open weights on ClawBox-class hardware; nothing leaves your network, zero per-token cost |
Why Claude Sonnet 4.6 Is the Default
1. An assistant's job is agentic, not conversational
OpenClaw spends its life calling tools: reading email, running skills, editing files, chaining steps. SWE-bench (79.6% for Sonnet 4.6) is a decent proxy for exactly this — multi-step tool use that has to not go off the rails on step seven. Chat eloquence matters far less than reliable tool calls.
2. The price sits in the sweet spot
At $3/$15 per million tokens, Sonnet is cheap enough to run all day without anxiety, and capable enough that you rarely wish you'd paid for Opus. For comparison, running OpenClaw + the Claude API is reportedly 40–60% cheaper than a ChatGPT Plus subscription plus equivalent assistant subscriptions.
3. You're not locked in anyway
The strongest argument for starting with Sonnet is that starting is cheap to undo. OpenClaw's model-agnostic design means a wrong first choice costs you a config edit, not a migration.
What It Costs per Month
API pricing is per-token, so your bill tracks your usage. Realistic profiles, June 2026:
| Usage Profile | Typical Setup | Est. Monthly Cost |
|---|---|---|
| Light (a few tasks a day, short chats) | DeepSeek V3.2 or Gemini 3.1 Pro | $5–15 |
| Typical (daily assistant, email + calendar + a few skills) | Claude Sonnet 4.6 | $15–40 |
| Heavy (long agent runs, coding, big contexts) | Sonnet daily + Opus for hard tasks | $40–100+ |
| Privacy-first (nothing leaves the network) | Local Llama on ClawBox-class hardware | $0 API (hardware one-time) |
Most people land in the $15–40/mo band — and remember that's pay-per-use: a quiet month costs less, and there's no subscription to cancel.
How Model Switching Works
The model is just a setting in OpenClaw's configuration: pick a provider, paste an API key, name the model. In practice there are three patterns worth knowing:
- •One model for everything - Simplest setup. Set Sonnet 4.6 as the default and forget about it. Right for 80% of users.
- •Tiered models - A budget model (DeepSeek, Gemini) for high-volume background work like summarizing feeds, and a frontier model for anything interactive. Cuts bills meaningfully for heavy users.
- •Per-task overrides - Switch to Opus for a gnarly multi-step job, then drop back. Because keys for multiple providers can sit side by side, switching is a one-line change — no reinstall, no data migration.
Whichever you choose, scope each API key to the minimum it needs — model keys are credentials like any other, and our hardening guide covers key hygiene in detail.
Frequently Asked Questions
What is the best model for OpenClaw in 2026?
Claude Sonnet 4.6 for most users — the best balance of agentic capability, reliability, and price. Claude Opus 4.6/4.7 for complex orchestration, Gemini 3.1 Pro for large-context budget work, DeepSeek V3.2 as the cheapest credible option.
How much does OpenClaw cost per month in API fees?
Typically $15–40/mo for normal personal use. Light users on budget models stay under $15; heavy frontier-model use can pass $40. OpenClaw + the Claude API is reportedly 40–60% cheaper than ChatGPT Plus plus equivalent assistant subscriptions.
Can I switch models later?
Yes — OpenClaw is model-agnostic. The model is a config setting, so you can change providers anytime or run different models for different tasks. There's no lock-in.
Can OpenClaw run a fully local model?
Yes, via open-weight models like Llama on capable hardware such as ClawBox-class Jetson devices. Local models trail frontier APIs on hard agentic tasks, but for privacy-critical workflows they keep every token on your own network at zero per-token cost.