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GPT-5.4 nano vs Mistral Small 4 — Cheapest AI Pricing
Mistral Small 4 is 50% cheaper on input ($0.10 vs $0.20). Compare the two cheapest AI models available today.
Pricing data verified: Jun 27, 2026
All Budget Models Compared
The cheapest AI models from major providers, ranked by input price.
| Model | Provider | Tier | Input (per 1M) | Output (per 1M) | Context |
|---|---|---|---|---|---|
| Mistral Small 4 | Mistral | Budget | $0.10 | $0.30 | 128K |
| GPT-5.4 nano | OpenAI | Budget | $0.20 | $1.25 | 400K |
| DeepSeek V4 Flash | DeepSeek | Budget | $0.14 | $0.28 | 1M |
| Gemini 2.5 Flash-Lite | Budget | $0.10 | $0.40 | 1M | |
| Llama 3.1 8B | Meta | Budget | $0.10 | $0.10 | 128K |
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See how these ultra-budget models compare for your specific usage.
Which Should You Choose?
High-Volume Classification
Sorting emails, tagging content, sentiment analysis at massive scale.
Data Extraction
Parsing documents, extracting structured data from text.
Long Document Processing
Processing large documents, legal contracts, research papers.
Chatbot at Scale
Customer support bots handling thousands of conversations daily.
Code Suggestions
Quick code completions, inline suggestions, autocomplete.
Cost-Sensitive MVP
Early-stage startup, keeping API costs near zero while validating.
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Frequently Asked Questions
Is GPT-5.4 nano or Mistral Small 4 cheaper?
Mistral Small 4 is cheaper. It costs $0.10/$0.30 per 1M tokens while GPT-5.4 nano costs $0.20/$1.25. That's 50% cheaper on input and 76% cheaper on output. At 1M tokens/month, Mistral Small 4 costs $0.40 vs GPT-5.4 nano's $1.45.
What is the context window difference?
GPT-5.4 nano has a 400K token context window, while Mistral Small 4 has a 128K token context window. GPT-5.4 nano supports 3x more context, which matters for longer documents and conversations.
GPT-5.4 nano vs Mistral Small 4 for enterprise?
For enterprise bulk processing, Mistral Small 4 at $0.10 input offers the lowest cost per token. GPT-5.4 nano at $0.20 input provides 3x more context (400K vs 128K). Choose Mistral for cost-sensitive bulk tasks, GPT-5.4 nano for tasks needing larger context.
How do these compare to DeepSeek V4 Flash?
DeepSeek V4 Flash at $0.14/$0.28 is cheapest overall for balanced workloads. Mistral Small 4 ($0.10/$0.30) is cheaper on input but slightly more on output. GPT-5.4 nano ($0.20/$1.25) is most expensive but offers 400K context.
Can I switch between them easily?
Yes. Both use standard OpenAI-compatible API formats. Mistral's API is compatible with OpenAI SDKs, so switching typically requires only changing the base URL and API key. Migration takes minutes.
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