GPT-5.6 Sol vs GPT-5 Pro
Pricing verdict: GPT-5.6 Sol vs GPT-5 Pro: GPT-5.6 Sol is cheaper for input-heavy usage ($5.00/M vs $15.00/M input tokens), while GPT-5.6 Sol is better for long-context tasks (1,050,000 tokens).
Direct answer: choose GPT-5.6 Sol for lower token spend and choose GPT-5.6 Sol when your workload needs longer context.
Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5.6 Sol
GPT-5 Pro
Cost Differences
GPT-5 Pro costs more than GPT-5.6 Sol
Quick Recommendation
Winner for direct API pricing: GPT-5.6 Sol. At the default workload, GPT-5.6 Sol saves about $165.00/month ($2,007.50/year) versus GPT-5 Pro.
Feature Comparison
| Feature | GPT-5.6 Sol | GPT-5 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price | $5.00/1M tokens | $15.00/1M tokens |
| Output Price | $30.00/1M tokens | $120.00/1M tokens |
| Context Window | 1,050,000 tokens | 200,000 tokens |
| Max Output | 128,000 tokens | 100,000 tokens |
| Category | flagship | flagship |
| Capabilities | textvisioncodereasoning | textvisioncodereasoning |
| Release Date | 6/26/2026 | 8/7/2025 |
GPT-5.6 Sol vs GPT-5 Pro: Which Should You Choose?
Choosing between GPT-5.6 Sol and GPT-5 Pro depends on your priorities: cost efficiency, context length, or raw capability. GPT-5.6 Sol is the more affordable option at $5.00/1M input tokens — 67% cheaper than GPT-5 Pro. Meanwhile, GPT-5.6 Sol offers a significantly larger context window at 1,050,000 tokens vs 200,000 for GPT-5 Pro.
Both models are in the flagship category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: GPT-5.6 Sol would save you roughly $16,500.00/month compared to GPT-5 Pro. For startups and indie developers, that difference can be significant.
Output costs matter too. GPT-5.6 Sol charges $30.00/1M output tokens vs $120.00 for GPT-5 Pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. GPT-5.6 Sol has the edge here at $30.00/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose GPT-5.6 Sol when:
- • Budget is a primary concern
- • You need a larger context window (1,050,000 tokens)
- • You need longer outputs (up to 128,000 tokens)
- • You're already using OpenAI's API ecosystem
Choose GPT-5 Pro when:
- • You're already using OpenAI's API ecosystem
Pros and Caveats at a Glance
GPT-5.6 Sol
- • Input pricing: $5.00/M tokens
- • Output pricing: $30.00/M tokens
- • Context window: 1,050,000 tokens
- • Max output: 128,000 tokens
Watch out for
- • Trade-offs are minor in this matchup.
GPT-5 Pro
- • Input pricing: $15.00/M tokens
- • Output pricing: $120.00/M tokens
- • Context window: 200,000 tokens
- • Max output: 100,000 tokens
Watch out for
- • Higher input cost than GPT-5.6 Sol
- • Higher output cost than GPT-5.6 Sol
- • Smaller context window than GPT-5.6 Sol
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
GPT-5.6 Sol (OpenAI)
GPT-5 Pro (OpenAI)
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Which is cheaper, GPT-5.6 Sol or GPT-5 Pro?▼
What is the context window difference between GPT-5.6 Sol and GPT-5 Pro?▼
Which model is better for AI Agent / Agentic Workflows?▼
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