The AI API market has exploded with competition in 2026. OpenAI, Anthropic, Google, and DeepSeek are all battling for your budget with increasingly capable models at ever-lower prices. This comprehensive guide compares every major frontier model's pricing so you can make the right choice for your use case.
Complete LLM Pricing Table 2026
All prices are per million tokens (input / output):
| Model | Provider | Input / 1M | Output / 1M | Context | Best For |
|---|---|---|---|---|---|
| Gemini 3 Flash-Lite | $0.05 | $0.20 | 1M | Highest volume | |
| Gemini 3 Flash | $0.075 | $0.30 | 1M | Budget general AI | |
| GPT-4o mini | OpenAI | $0.15 | $0.60 | 128K | Cost-effective tasks |
| DeepSeek V3 | DeepSeek | $0.27 | $1.10 | 64K | Budget reasoning |
| Claude 3.5 Haiku | Anthropic | $0.80 | $4.00 | 200K | Fast, structured |
| Gemini 3 Pro | $0.35 | $1.05 | 1M | Long context tasks | |
| DeepSeek R1 | DeepSeek | $0.55 | $2.20 | 64K | Complex reasoning |
| GPT-5 mini | OpenAI | $0.75 | $3.00 | 128K | Mini frontier model |
| GPT-4o | OpenAI | $2.50 | $10.00 | 128K | General coding |
| Claude 4 Sonnet | Anthropic | $3.00 | $15.00 | 200K | Long docs, analysis |
| Gemini 3 Ultra | $1.25 | $5.00 | 1M | Premium long context | |
| GPT-5 | OpenAI | $10.00 | $40.00 | 128K | Maximum capability |
| Claude 4 Opus | Anthropic | $15.00 | $75.00 | 200K | Complex research |
Cost by Use Case
Estimated cost per 1,000 queries (assuming 500 input + 500 output tokens per query):
| Use Case | Budget Pick | Best Value | Premium |
|---|---|---|---|
| Chatbot / Q&A | Gemini 3 Flash-Lite ($0.125) | GPT-4o mini ($0.375) | Claude 4 Sonnet ($9.00) |
| Document analysis | Gemini 3 Flash ($0.1875) | Gemini 3 Pro ($0.70) | Claude 4 Sonnet ($9.00) |
| Code generation | DeepSeek V3 ($0.685) | GPT-5 mini ($1.875) | GPT-5 ($25.00) |
| RAG query | Gemini 3 Flash-Lite ($0.125) | GPT-4o mini ($0.375) | Claude 4 Sonnet ($9.00) |
| Complex reasoning | DeepSeek R1 ($1.375) | Claude 4 Sonnet ($9.00) | GPT-5 ($25.00) |
Key Insights
- Gemini 3 Flash-Lite is the cheapest at $0.05/$0.20 per million tokens — 150x cheaper than Claude 4 Opus
- DeepSeek R1 is the budget reasoning champion at $0.55/$2.20, undercutting Claude Haiku by 31% for reasoning tasks
- GPT-5 mini brings frontier capabilities at $0.75/$3.00 — 93% cheaper than GPT-5 for most tasks
- Gemini 3 Ultra offers best-in-class value at $1.25/$5.00 with 1M context window
- Claude 4 Sonnet remains the document analysis king with superior reasoning and 200K context
Recommendations by Budget
Budget (<$100/month)
Use Gemini 3 Flash-Lite or Gemini 3 Flash. These handle 90% of tasks at near-zero cost. Gemini 3 Flash-Lite is ideal for high-volume RAG and classification. DeepSeek V3 is excellent for basic reasoning tasks at $0.27/$1.10.
Mid-Range ($100–$1,000/month)
Mix Gemini 3 Flash (for simple tasks) with GPT-5 mini or Claude 3.5 Haiku (for complex tasks). Use smart routing to send 60% of queries to the cheap model, 30% to mid-tier, and 10% to premium for edge cases.
Enterprise ($1,000+/month)
Implement full model routing with prompt caching and response caching. Negotiate volume discounts with your primary provider. Use Gemini 3 Ultra for document-heavy workflows with its 1M context, GPT-5 for maximum capability, and Claude 4 Sonnet for nuanced analysis tasks.
Frequently Asked Questions
Which LLM is cheapest in 2026?
Gemini 3 Flash-Lite is currently the cheapest at $0.05 per million input tokens and $0.20 per million output tokens, offered by Google. It's 2x cheaper than the previous leader (Gemini 2.0 Flash-Lite at $0.075/$0.30) and 150x cheaper than Claude 4 Opus.
What's the best value LLM in 2026?
For general tasks, GPT-4o mini offers the best balance of capability and cost at $0.15/$0.60. For reasoning tasks, DeepSeek R1 at $0.55/$2.20 delivers excellent value. For long documents, Gemini 3 Pro at $0.35/$1.05 with 1M context is hard to beat.
How does DeepSeek compare to GPT and Claude?
DeepSeek V3 and R1 offer competitive performance at significantly lower prices than Western counterparts. DeepSeek R1 at $0.55/$2.20 is ideal for reasoning tasks, while DeepSeek V3 at $0.27/$1.10 handles general tasks affordably. The main trade-off is the smaller 64K context window compared to Google's 1M context.
Is GPT-5 worth the premium over GPT-5 mini?
GPT-5 mini at $0.75/$3.00 delivers 85-90% of GPT-5's capability at just 7.5% of the cost. For most production applications, GPT-5 mini is the better choice. Reserve GPT-5 ($10/$40) for cases requiring maximum reasoning and generation quality.
Which model has the longest context window?
Google's Gemini 3 Flash, Pro, and Ultra all support 1 million token context windows — the longest available. Claude 4 Sonnet and Opus support 200K context. OpenAI's GPT-4o, GPT-5, and GPT-5 mini support 128K context. DeepSeek models have 64K context.
Key Takeaways
- Gemini 3 Flash-Lite is the cheapest at $0.05/$0.20 per 1M tokens
- DeepSeek R1 offers the best value for reasoning tasks at $0.55/$2.20
- GPT-5 mini brings frontier capabilities at mid-tier prices ($0.75/$3.00)
- Gemini 3 Ultra delivers best-in-class value with 1M context at $1.25/$5.00
- Use the LLM API Cost Comparison calculator to find the cheapest model for your specific tokens