Top 10 Cheapest AI APIs in 2026 (With Live Pricing Badges)

AI API costs vary by 400x between the cheapest and most expensive models. If you're building on a budget, picking the right model can save you thousands per month. Here are the 10 cheapest AI APIs in 2026 — with live pricing badges you can embed in your README or docs.

The 10 Cheapest AI APIs, Ranked

All prices are per 1M tokens, verified June 2026. The "cost per 1K requests" column assumes a typical 500-token input / 500-token output request.

Live Pricing Badges — Embed in Your README

Each badge below shows live pricing that auto-updates when providers change their rates. Click any code block to copy the embed code. See all 34 badges on our Pricing Badges Gallery.

#1 — Gemini 2.0 Flash Lite

The absolute cheapest AI API. Great for classification, extraction, and simple Q&A.

![Gemini Flash Lite](https://getapipulse.com/api/badge?model=google-flash-lite)

#2 — GPT-oss 20B

OpenAI's open-source budget model. Surprisingly capable for its price.

![GPT-oss 20B](https://getapipulse.com/api/badge?model=openai-gpt-oss-20b)

#3 — Llama 3.1 8B

Meta's smallest model via Together.ai. Equal input/output pricing makes cost predictable.

![Llama 3.1 8B](https://getapipulse.com/api/badge?model=llama-3.1-8b)

#4 — Gemini 2.0 Flash

1M context window at $0.10 input. Best budget option for long-document processing.

![Gemini Flash](https://getapipulse.com/api/badge?model=google-flash)

#5 — Llama 4 Scout

10M context window — the largest available. Dedicated inference via Together.ai.

![Llama 4 Scout](https://getapipulse.com/api/badge?model=llama-4-scout)

#6 — DeepSeek V4 Flash

DeepSeek's speed-optimized model. Best balance of cost and quality for most tasks.

![DeepSeek V4 Flash](https://getapipulse.com/api/badge?model=deepseek-v4-flash)

#7 — GPT-oss 120B

OpenAI's larger open-source model. Strong reasoning at budget prices.

![GPT-oss 120B](https://getapipulse.com/api/badge?model=openai-gpt-oss-120b)

#8 — Mistral Small 4

Excellent for code completion and structured output. Strong European option.

![Mistral Small](https://getapipulse.com/api/badge?model=mistral-small)

#9 — GPT-5 mini

OpenAI's mid-budget option. 272K context with strong general capabilities.

![GPT-5 mini](https://getapipulse.com/api/badge?model=openai-gpt5-mini)

#10 — DeepSeek V4 Pro

The best price-to-quality ratio for complex tasks. 1M context, excellent at code and reasoning.

![DeepSeek V4 Pro](https://getapipulse.com/api/badge?model=deepseek-v4-pro)

How to Pick the Right Budget Model

Not every cheap model fits every task. Here's a quick guide:

• Simple tasks (classification, extraction, formatting): Any model in the top 8 works. Pick the cheapest.
• Code generation: DeepSeek V4 Pro (#10) or Mistral Small 4 (#8) — both under $0.66/1K requests.
• Long documents: Gemini Flash (#4) or Llama 4 Scout (#5) — both have 1M+ context windows at budget prices.
• High-volume production: Llama 3.1 8B (#3) at $0.10/1K requests — the lowest absolute cost.
• Quality-sensitive output: DeepSeek V4 Pro (#10) — near-premium quality at 90% less cost.

The Massive Cost Gap: Budget vs Premium

To put these prices in perspective: the cheapest model (Gemini Flash Lite at $0.075/$0.30) is 400x cheaper on input and 600x cheaper on output than the most expensive model (GPT-5.5 Pro at $30/$180). Even the #10 cheapest model (DeepSeek V4 Pro at $0.44/$0.87) is 68x cheaper than premium tier.

For most startups and side projects, a top-10 budget model will handle 90%+ of your AI workloads. Reserve premium models for the 10% of tasks that truly need them.

Embed All 10 Badges at Once

Want to show all 10 prices in your project docs? Use our badges gallery to grab embed code for each model, or use the API directly:

Key Takeaways

• Gemini 2.0 Flash Lite is the cheapest at $0.075/$0.30 per 1M tokens
• Llama 3.1 8B has the lowest cost per 1K requests at $0.10
• DeepSeek V4 Pro is the best value for quality-sensitive tasks
• Budget models are 400x+ cheaper than premium models
• Embed live pricing badges in your README — they auto-update when prices change

Methodology

All prices sourced directly from provider pricing pages, verified June 1, 2026. Prices are per 1M tokens. Cost per 1K requests assumes 500-token input + 500-token output per request. We track 34 models across 10 providers. Data is updated monthly. See pricing changelog →