📅 April 17, 2026 · 3 min read
AI API Pricing Comparison 2026: Complete Guide for Developers
Compare AI API pricing across OpenAI, Anthropic, Google, Mistral, DeepSeek, and more. Find the cheapest model for your use case with our detailed pricing tables and cost calculator.
AI API prices have dropped dramatically in 2026, but the pricing landscape is confusing. Different providers charge by different token counts, have different context windows, and different speed/quality tradeoffs. Here's the definitive comparison.
LLM API Pricing (Per 1M Tokens)
| Model | Input | Output | Context | Quality |
|---|---|---|---|---|
| Gemini 2.5 Flash | $0.15 | $0.60 | 1M | Good |
| GPT-4o-mini | $0.15 | $0.60 | 128K | Good |
| Claude Haiku 4 | $0.25 | $1.25 | 200K | Good |
| DeepSeek V3 | $0.27 | $1.10 | 128K | Very Good |
| Qwen 3 32B | $0.12 | $0.40 | 128K | Good |
| Claude Sonnet 4.5 | $3.00 | $15.00 | 200K | Excellent |
| GPT-4o | $2.50 | $10.00 | 128K | Excellent |
| Gemini 2.5 Pro | $1.25 | $10.00 | 2M | Excellent |
| GPT-5 | $10.00 | $30.00 | 256K | Best |
| Claude Opus 4.7 | $15.00 | $75.00 | 1M | Best |
Best Model by Use Case
| Use Case | Best Model | Why | Cost/1K Requests |
|---|---|---|---|
| Chatbots (high volume) | Gemini 2.5 Flash | Cheapest, fast, good quality | ~$0.10 |
| RAG / Document QA | Gemini 2.5 Pro | 2M context, strong reasoning | ~$1.50 |
| Coding assistants | Claude Sonnet 4.5 | Best code quality | ~$3.00 |
| Content generation | GPT-4o | Versatile, fast | ~$2.00 |
| Complex reasoning | GPT-5 | Highest MMLU, best analysis | ~$8.00 |
| Autonomous agents | Claude Opus 4.7 | Best SWE-bench, agent features | ~$15.00 |
Cost Calculator: Monthly API Spend
Scenario: Chatbot handling 100K messages/day, 500 tokens input + 200 tokens output each
- Gemini 2.5 Flash: ~$900/month ← Cheapest
- GPT-4o-mini: ~$1,050/month
- Claude Haiku 4: ~$1,575/month
- GPT-4o: ~$10,500/month
- Claude Sonnet 4.5: ~$15,750/month
💡 Tip: Use model routing — Flash/Haiku for simple queries, Sonnet/GPT-4o for complex ones. This can cut costs by 70-80%.
Hidden Costs to Watch
- Token counting differences: OpenAI and Anthropic count tokens differently (same text = different token count)
- Caching: Anthropic offers prompt caching (90% discount on cached inputs). Google has context caching too
- Batch API: Both OpenAI and Anthropic offer 50% discount for non-real-time batch processing
- Rate limits: Cheaper models may have stricter rate limits, forcing you to use more expensive tiers
- Image/audio tokens: Multimodal inputs cost 10-100x more than text tokens
Price Trend: AI Getting Cheaper
LLM API prices have dropped ~90% since early 2024:
- GPT-4 (2023): $30/$60 per 1M tokens
- GPT-4o (2024): $5/$15 per 1M tokens
- GPT-4o-mini (2025): $0.15/$0.60 per 1M tokens
- Gemini 2.5 Flash (2026): $0.15/$0.60 per 1M tokens (with better quality)
Prices will continue falling as competition intensifies and models become more efficient.
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