Same Generation
GPT-5.6 Sol vs GPT-5.5
Same input price, different output costs. Which offers better value?
Last verified: Jul 13, 2026 · See all 67 models ranked →
| Feature | GPT-5.6 Sol | GPT-5.5 |
|---|---|---|
| Input price (per 1M tokens) | $5.00 | $5.00 |
| Output price (per 1M tokens) | $30.00 | $30.00 |
| Context window | 1.05M | 1.05M |
| Standard request cost | $0.019 | $0.019 |
| Output-heavy request cost | $0.13 | $0.13 |
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Openai
GPT-5.6 Sol
$0
estimated monthly cost
Input cost$0
Output cost$0
Per request$0
Openai
GPT-5.5
$0
estimated monthly cost
Input cost$0
Output cost$0
Per request$0
The Verdict
Same price tier. Different strengths.
Both GPT-5.6 Sol and GPT-5.5 are priced similarly. Choose based on context window, ecosystem, and model strengths.
When to Choose GPT-5.6 Sol
- Choose GPT-5.6 Sol when you need the larger context window (1.05M vs 1.05M) or prefer the openai ecosystem.
- Ecosystem: If you're already using openais API and want to stay in their ecosystem.
When to Choose GPT-5.5
- Choose GPT-5.5 when you want the lower output price ($30.00/1M vs $30.00/1M).
- Ecosystem: If you're already using openais API and want to stay in their ecosystem.
Cost Comparison: Real-World Scenarios
Chatbot (1,000 req/day, 1,500 input, 400 output)
GPT-5.6 Sol$585.00/mo
GPT-5.5$585.00/mo
Monthly savings$0.000/mo (0%)
Code Generation (200 req/day, 3,000 input, 1,200 output)
GPT-5.6 Sol$306.00/mo
GPT-5.5$306.00/mo
Monthly savings$0.000/mo (0%)
RAG Pipeline (500 queries/day, 5,000 input, 800 output)
GPT-5.6 Sol$735.00/mo
GPT-5.5$735.00/mo
Monthly savings$0.000/mo (0%)
Full Comparison Table
| Model | Input/1M | Output/1M | vs GPT-5.6 Sol | Context |
|---|---|---|---|---|
| GPT-5.6 Sol | $5.00 | $30.00 | — | 1.05M |
| GPT-5.5 | $5.00 | $30.00 | Same price | 1.05M |
| DeepSeek V4 Flash | $0.14 | $0.28 | 99% cheaper | 1M |
| GPT-oss 20B | $0.080 | $0.35 | 99% cheaper | 128K |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | 99% cheaper | 1M |
| Jamba Mini | $0.20 | $0.40 | 99% cheaper | 256K |
| Llama 4 Scout | $0.18 | $0.59 | 98% cheaper | 1M |
| Claude Fable 5 | $10.00 | $50.00 | 67% more expensive | 1M |
| Claude Mythos 5 | $10.00 | $50.00 | 67% more expensive | 1M |
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