Best AI models for customer support
Chatbots and assistants handling thousands of conversations a day: cost per conversation rules, above a minimum quality bar.
Criteria models with an LLM Stats overall index of 50 or more, ranked by 3:1 blended price (lowest first).
- 01Gemini 3.8 FlashGoogle$1.50USD / M tokens
- 02GPT-5.6 TerraOpenAI$4.50USD / M tokens
- 03GPT-5.6 SolOpenAI$8.00USD / M tokens
| # | Model | USD / M tokens |
|---|---|---|
| 01 | Gemini 3.8 FlashGoogle | |
| 02 | GPT-5.6 TerraOpenAI | |
| 03 | GPT-5.6 SolOpenAI | |
| 04 | Claude Opus 5Anthropic | |
| 05 | GPT-6 AstraOpenAI | |
| 06 | Claude Fable 5.1Anthropic |
How it is calculated
- The indexes (overall, reasoning, coding) are the ones LLM Stats publishes; Codifly does not run these tests.
- Prices are each provider's official standard API prices, without caching or batching.
- The blended price weighs 3 input tokens per output token; cost-benefit divides the overall index by that price.
Which one fits your case?
The top of a ranking is not always the most cost-effective at your volume. Estimate your cost or ask us for a written recommendation.
Frequently asked questions
Which is the best AI model for customer support?
Gemini 3.8 Flash ($1.50) leads this ranking, followed by GPT-5.6 Terra ($4.50) · GPT-5.6 Sol ($8.00). Data reviewed on Sep 8, 2026.
Which model in this ranking has the best price-performance?
Gemini 3.8 Flash: 34.0 LLM Stats index points per dollar, at a blended price of $1.50 per million tokens.
How is this ranking calculated?
models with an LLM Stats overall index of 50 or more, ranked by 3:1 blended price (lowest first). The indexes (overall, reasoning, coding) are the ones LLM Stats publishes; Codifly does not run these tests. Prices are each provider's official standard API prices, without caching or batching. The blended price weighs 3 input tokens per output token; cost-benefit divides the overall index by that price.
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