GPT-6 Sol — API Pricing & Benchmarks
GPT-6 Sol is OpenAI's mid reasoning model, released in 2026-09. The API costs $2.00 per 1M input tokens and $10.0 per 1M output tokens ($4.00 blended at a 3:1 ratio), with cached input at $0.20. It supports a 1.1M-token context window. On the independently measured Artificial Analysis Intelligence Index it scores 47.5, ranking #7 of 72 models tracked on this site, with a median output speed of 107 tokens/sec.
Explore provider routes and additional benchmark sources for GPT-6 Sol
| Provider | OpenAI |
| Input price / 1M tokens | $2.00 |
| Output price / 1M tokens | $10.0 |
| Cached input / 1M tokens | $0.20 |
| Blended price (3:1) | $4.00 |
| Context window | 1.1M |
| Max output tokens | 128K |
| Knowledge cutoff | 2026-04 |
| License | proprietary |
| Input modalities | T+I |
| Output speed (tok/s) | 107 |
| Released | 2026-09 |
| Artificial Analysis Intelligence Index | 47.5 |
| Humanity's Last Exam | 47.9% |
Where GPT-6 Sol fits
On a blended 3:1 basis GPT-6 Sol costs $4.00 per 1M tokens, cheaper than 26% of the 84 priced models in this index. It sits in the mid-tier bracket where most production chat, RAG and summarization workloads run: meaningfully cheaper than flagships while keeping most of their capability. Cached input is priced at $0.20 (90% below standard input), which rewards prompt structures with long stable prefixes — see our caching guide.
Price history
| Period | Input $/1M | Output $/1M | Cached $/1M |
|---|---|---|---|
| 2026-09-22 → current | $2.00 | $10.0 | $0.20 |
No list-price changes recorded since tracking began. Full dataset: price-history.json (CC BY 4.0).
Alternatives at a similar price
- Claude Sonnet 5 (Anthropic) — $4.00/1M blended, AA Index 38.2
- Qwen3.7-Max (Alibaba Qwen) — $3.75/1M blended, AA Index 29.5
- GPT-4o (OpenAI) — $4.38/1M blended, AA Index 9
- Command A (Cohere) — $4.38/1M blended, AA Index 7
Compare GPT-6 Sol
About OpenAI
OpenAI builds the GPT series. The GPT-6 generation (September 2026) ships in three sizes — Astra (flagship, $10/$50), Sol ($2/$10) and Luna ($0.10/$0.50) — that share a 1.05M-token context window and the same tooling, so teams can move workloads between price points without changing integration code. The GPT-5.6 models remain on sale as the previous generation.