GPT-5.4 nano vs GPT-5.6 Sol — Side-by-side pricing
Side-by-side API pricing and tokenizer details for GPT-5.4 nano (OpenAI) and GPT-5.6 Sol (OpenAI).
Side-by-side pricing
| Feature | GPT-5.4 nano | GPT-5.6 Sol |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input (per 1M tokens) | $0.200 | $5.00 |
| Output (per 1M tokens) | $1.25 | $30.00 |
| Long-context pricing | Flat rate at any prompt size | Over 272K tokens: $10.00 in / $45.00 out |
| Context caching | Yes — 90% off cached tokens | Yes — 90% off cached tokens |
| Batch API discount | 50% off | 50% off |
| Context window | 400K tokens | 1.1M tokens |
| Tokenizer | o200k_base (tiktoken) | o200k_base (tiktoken) |
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
GPT-5.4 nano
$0.3500
Input: $0.1000 +Output: $0.2500
GPT-5.6 Sol
$8.5000
Input: $2.5000 +Output: $6.0000
GPT-5.4 nano is 96% cheaper for this workload — saving $8.1500 per month at this volume.
Frequently asked questions
Yes, GPT-5.4 nano is cheaper for the typical workload above. At $0.200/1M input and $1.25/1M output tokens, it costs $0.3500 versus $8.5000 for GPT-5.6 Sol — a 96% difference. Note that GPT-5.6 Sol switches to long-context pricing above 272K prompt tokens, so for very long prompts this gap does not scale linearly.
GPT-5.4 nano supports a 400K token context window. GPT-5.6 Sol supports a 1.1M token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
GPT-5.4 nano supports context caching (90% off repeated tokens). It offers a 50% Batch API discount. GPT-5.6 Sol supports context caching (90% off repeated tokens). It offers a 50% Batch API discount.
Yes, both GPT-5.4 nano and GPT-5.6 Sol use the o200k_base (tiktoken). The same text produces identical token counts on both models, so any cost difference is purely due to the rate each provider charges per token.
GPT-5.4 nano (OpenAI): $0.2 input / $1.25 output per 1M tokens. GPT-5.6 Sol (OpenAI): $5 input / $30 output per 1M tokens. Rates shown before caching or batch discounts.
For an 80% output / 20% input workload — typical for code generation or long-form writing — GPT-5.4 nano costs $1.0400 per 1M total tokens and GPT-5.6 Sol costs $25.0000. GPT-5.4 nano is 96% cheaper for this pattern. For your exact ratio, paste a real prompt into the calculator above.
GPT-5.4 nano has a 400K-token context window — approximately 300K words or ~1K pages of standard text. GPT-5.6 Sol has a 1.1M-token context window — approximately 788K words or ~3K pages. (Estimates assume ~0.75 words per token.)
Calculate costs for your actual prompt
Paste your prompt into the calculator and get exact token counts using each model's real tokenizer — all in your browser.
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