Customer support chatbot cost drivers
Support assistants combine repeated instructions with high request volume, so small changes in routing and output length can materially change monthly spend.
Workload cost scenario
Customer Support Chatbot API Cost Calculator
Estimate monthly LLM API cost for a customer support chatbot with repeated context, concise answers, and steady request volume.
Support and platform teams planning a production chatbot budget.
Lowest tracked estimate
$23.31
DeepSeek V4 Flash non-thinking for the current assumptions
Lowest cost does not mean best model. Test output quality, latency, retries, and reliability on your own workload.
Cost comparison
Estimated monthly cost by model
Comparing 22 models that fit the initial input length.
| Model | Provider | Input cost | Output cost | Monthly estimate | Context usage |
|---|---|---|---|---|---|
| DeepSeek V4 Flash non-thinking | DeepSeek | $13.51 | $9.80 | $23.31 | 0.1% |
| Gemini 2.5 Flash-Lite | $9.84 | $14.00 | $23.84 | 0.1% | |
| GPT-4o mini | OpenAI | $16.20 | $21.00 | $37.20 | 0.9% |
| gpt-5.4-nano | OpenAI | $19.68 | $43.75 | $63.43 | 0.3% |
| deepseek-v4-pro | DeepSeek | $41.85 | $30.45 | $72.30 | 0.1% |
| Gemini 3.5 Live Translate Preview | $24.60 | $52.50 | $77.10 | 0.9% | |
| Gemini 3.1 Flash-Lite | $24.60 | $52.50 | $77.10 | 0.1% | |
| Gemini 2.5 Flash | $29.52 | $87.50 | $117.02 | 0.1% | |
| Gemini 3 Flash Preview | $49.20 | $105.00 | $154.20 | 0.1% | |
| gpt-5.4-mini | OpenAI | $73.80 | $157.50 | $231.30 | 0.3% |
| Claude Haiku 4.5 | Anthropic | $98.40 | $175.00 | $273.40 | 0.6% |
| gpt-5.6-luna | OpenAI | $98.40 | $210.00 | $308.40 | 0.1% |
| Gemini 3.5 Flash | $147.60 | $315.00 | $462.60 | 0.1% | |
| Gemini 2.5 Pro | $123.00 | $350.00 | $473.00 | 0.1% | |
| Claude Sonnet 5 | Anthropic | $196.80 | $350.00 | $546.80 | 0.1% |
| Gemini 3.1 Pro Preview | $196.80 | $420.00 | $616.80 | 0.1% | |
| GPT-4o | OpenAI | $270.00 | $350.00 | $620.00 | 0.9% |
| gpt-5.6-terra | OpenAI | $246.00 | $525.00 | $771.00 | 0.1% |
| Claude Sonnet 4.6 | Anthropic | $295.20 | $525.00 | $820.20 | 0.1% |
| Claude Opus 4.8 | Anthropic | $492.00 | $875.00 | $1,367.00 | 0.1% |
| gpt-5.6-sol | OpenAI | $492.00 | $1,050.00 | $1,542.00 | 0.1% |
| Claude Fable 5 | Anthropic | $1,200.00 | $1,750.00 | $2,950.00 | 0.1% |
What to measure
- Measure retries and escalations separately.
- Cache repeated policies or product context where the provider supports it.
- Cap routine answers before routing complex cases to a higher-cost model.
Estimate boundary: This estimate excludes retrieval, embeddings, moderation, tool calls, storage, and human support costs.
View pricing sources
OpenAI model pricingHigh confidenceChecked 2026-07-13
Tracked prices for included OpenAI models are checked against official provider documentation.
Anthropic model pricingHigh confidenceChecked 2026-07-12
Tracked prices for included Anthropic models are checked against official provider documentation.
Google model pricingHigh confidenceChecked 2026-07-14
Tracked prices for included Google models are checked against official provider documentation.
DeepSeek model pricingHigh confidenceChecked 2026-07-12
Tracked prices for included DeepSeek models are checked against official provider documentation.
Anthropic model pricingHigh confidenceChecked 2026-07-14
Tracked prices for included Anthropic models are checked against official provider documentation.