Cheapest LLM APIs (2026)
The most affordable large language model APIs ranked by price per million tokens — ideal for high-volume workloads, prototyping, and cost-sensitive production apps.
Why Gemini 2.0 Flash Lite is Best for Cheapest LLM APIs
Gemini 2.0 Flash Lite ranks highest for this use case based on Arena ELO score, benchmark performance, and capability coverage. It provides the best combination of quality, speed, and reliability for these specific tasks.
Cost Estimate
For a typical workload (~50M tokens/month, 60% input / 40% output), the cheapest qualifying model (Gemini 2.0 Flash Lite) costs approximately $8.25/month. The most capable model may cost more but delivers higher quality results.
Price vs Quality for Cheapest LLM APIs
Top 5 Models Compared
| Rank | Model | Provider | Input $/M | Output $/M | Arena ELO | Speed (tok/s) |
|---|---|---|---|---|---|---|
| #1 | Gemini 2.0 Flash Lite | $0.075 | $0.300 | 1200 | 180 | |
| #2 | GPT-4 1.5-nano | OpenAI | $0.100 | $0.400 | 1150 | 150 |
| #3 | GPT-4 1.5-mini | OpenAI | $0.400 | $1.60 | 1180 | 120 |
| #4 | Claude Haiku 4 | Anthropic | $1.00 | $5.00 | 1220 | 130 |
| #5 | Gemini 2.0 Flash | $0.100 | $0.400 | 1260 | 160 |
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