GPT-5.6 Sol pricing
GPT-5.6 Sol, Flagship-tier from OpenAI, costs $4.00 per 1M input tokens and $20.00 per 1M output tokens.
Input$4.00per 1M tokens
Output$20.00per 1M tokens
Context window1.05Mtokens
TierFlagshipOpenAI
Price your own workload against GPT-5.6 Sol in the calculator →
Specs and pricing
| Provider | OpenAI |
| Tier | Flagship |
| Context window | 1.05M tokens |
| Max output | 128K tokens |
| Input price | $4.00 / 1M tokens |
| Output price | $20.00 / 1M tokens |
| Cache write | $5.00 / 1M tokens |
| Cache read | $0.40 / 1M tokens |
| Modalities | text, image |
| Released | 2026-07 |
Note. Short-context rate, for prompts up to 272K input tokens. Above 272K the rate is $8 input / $30 output, cache read $0.80, cache write $10 per 1M. Promotional pricing, stated to run at least through 21 November 2026.
What it costs at realistic volumes
Assuming a 4:1 input:output token ratio, a common shape for chat and RAG-style workloads:
| Volume (4:1 in:out ratio) | Input cost | Output cost | Total / month |
|---|---|---|---|
| 1,000,000 in / 250,000 out | $4.00 | $5.00 | $9.00 |
| 10,000,000 in / 2,500,000 out | $40.00 | $50.00 | $90.00 |
| 100,000,000 in / 25,000,000 out | $400.00 | $500.00 | $900.00 |
Cheaper alternatives
Same tier (Flagship), a different provider, and a lower blended cost at the 4:1 ratio used above:
| Model | Provider | $/1M in | $/1M out | At the 4:1 ratio |
|---|---|---|---|---|
| Qwen3 235B A22B Instruct 2507 | Novita AI | $0.09 | $0.58 | 97.4% cheaper blended |
| GPT-OSS 120B | Groq | $0.15 | $0.60 | 96.7% cheaper blended |
| Qwen3 235B-A22B (2507) | Parasail | $0.14 | $0.80 | 96.2% cheaper blended |
| Llama 4 Maverick | Together AI | $0.27 | $0.85 | 94.6% cheaper blended |
| Llama 4 Maverick Instruct | Novita AI | $0.27 | $0.85 | 94.6% cheaper blended |