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Which model should I use, and what will it cost?
Three questions: agent type, monthly volume, quality tier. Get a model recommendation and estimated monthly cost in seconds. For the precise per-token math on your real workload, use the full calculator. For the build-cost breakdown (no-code vs custom), read how much it costs to build an AI agent.
How this estimate works
The wizard picks a representative model for your quality tier and multiplies its per-token rate by a typical token profile for your agent type. Real workloads vary — for a more precise estimate use the full calculator with your actual token counts.
Pricing is verified daily against vendor sources and published as an open dataset. See current per-model pricing →
Common questions about AI agent cost
What builders ask before they pick a model.
How much does an AI agent cost?
Most production AI agents cost $5-$200/month all-in. A customer-support reply agent at 1,000 tickets/month runs ~$1.25 on Claude Haiku 4.5 or ~$7.50 on Claude Sonnet 4.6. A code-change agent at the same volume runs ~$75 on Sonnet. A research agent on Opus runs ~$50 for 1,000 cycles. The three variables that decide cost: which model, how many tokens per task, and how many tasks per month. The wizard above sizes it in three questions; the full calculator sizes it against your exact workload.
What's the cheapest AI agent to run?
DeepSeek V4 Flash at $0.09/$0.18 per million tokens is the cheapest credible model in 2026 — roughly 35x cheaper than Claude Sonnet 4.6 on input. Claude Haiku 4.5 at $1/$5 per million is the cheapest from a major US vendor. Gemini 2.5 Flash and Gemini 3.1 Flash-Lite are competitive in the same value tier. For most high-volume mechanical tasks (classification, extraction, routing), value-tier models handle 90% of the work at a fraction of frontier-tier cost.
How do I estimate the cost of an AI agent before building it?
Three numbers, in order: how many tasks per month, average tokens in/out per task, and which quality tier (frontier/balanced/value). For a sales follow-up agent: ~3,000 input + 800 output tokens per task is typical. For customer support replies: ~2,000 + 500. For research/synthesis: ~25,000 + 3,000. Multiply by your monthly volume, multiply by per-million-token rates from /api-pricing, and you have your model cost. Platform fees ($0 for self-hosted, $20-$200/month for SaaS) come on top.
What does the Vertex AI Agent Builder cost?
Vertex AI Agent Builder pricing is usage-based with no monthly subscription floor. You pay for the underlying model calls (Gemini 2.5 Pro at $1.25/$10 per million tokens for ≤200k context, $2.50/$15 above) plus standard Vertex AI infrastructure costs. Grounding via Google Search is 5,000 free prompts/month, then $14 per 1k queries. For most agentic workloads on Vertex, expect $50-$300/month in model costs plus minor infrastructure overhead.
What does Cline cost?
Cline itself is free open-source software (Apache 2.0). You pay only for the underlying model API tokens. A solo developer using Cline with Claude Sonnet 4.6 typically spends $30-$80/month in model costs. Heavy daily users hit $100-$200/month. The BYOK model means no platform markup — your costs land at whatever the model vendor charges directly. Compare against Cursor ($20/month subscription) or Claude Code ($20/month bundled with Claude Pro) at the platform level.
What's the cost of an AI agent for customer support?
At 10,000 tickets/month on Claude Sonnet 4.6 with typical token shapes (2,000 in / 500 out), the model cost is ~$70/month. Add a no-code platform like Lindy ($49-$199/month) and you're at $120-$270 all-in. On n8n self-hosted with a $5 VPS, you're at $75. Voice support adds ~$3/hour per agent on Retell, Vapi, or Bland — for 100 hours of phone support that's $300 in voice infrastructure on top of the chat-side costs.
Which AI model is best for cost efficiency in 2026?
For frontier-quality work where output matters: Claude Sonnet 4.6 at $3/$15 per million is the price-performance sweet spot. For high-volume mechanical work: Claude Haiku 4.5 at $1/$5 or Gemini 2.5 Flash at $0.30/$2.50. For frontier reasoning where Sonnet doesn't suffice: Claude Opus 4.8 at $5/$25. For extreme cost optimization: DeepSeek V4 Flash at $0.09/$0.18, though benchmark performance varies vs frontier models on agentic tasks.
Does this AI agent cost estimator include platform fees?
The wizard above estimates model API costs only — the per-token rate × your token profile × your monthly volume. Platform fees vary by tool: Lindy ($49-$199/month), Relevance AI ($19-$199/month), Stack AI ($199+/month), n8n cloud ($24-$100/month), Paperclip (free open-source), Claude Code (bundled with Claude Pro at $20/month). For total all-in cost, add the platform fee to the model cost the wizard shows.
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