GPT-5.6 Sol
OpenAI's flagship. Scores 61 on the AA Intelligence Index v4.1 and sets the state of the art on the Coding Agent Index (80), with an `ultra` multi-agent mode for the hardest work.
Start requirement: 75 credits to start
Capabilities
Pricing
| Input | $5.75 / 1M tokens |
| Cached input | $0.575 / 1M tokens |
| Cache write | $7.1875 / 1M tokens |
| Output | $34.5 / 1M tokens |
| Web search (when used) | $11.5 / 1,000 calls |
List prices plus 15%. Higher reasoning effort can consume more output tokens; it has no separate fixed multiplier. One credit equals 1¢ charged, with a one-credit minimum per completed run and the aggregate rounded up once.
Provider pricing source · verified 2026-07-20
Compare GPT-5.6 Sol
GPT-5.6 Sol: frequently asked questions
- What is GPT-5.6 Sol?
- OpenAI's flagship. Scores 61 on the AA Intelligence Index v4.1 and sets the state of the art on the Coding Agent Index (80), with an `ultra` multi-agent mode for the hardest work. You can try GPT-5.6 Sol on TryAI without a separate provider account.
- How much does GPT-5.6 Sol cost on TryAI?
- GPT-5.6 Sol uses these rates (provider list price plus 15%): Input: $5.75 / 1M tokens, Cached input: $0.575 / 1M tokens, Cache write: $7.1875 / 1M tokens, Output: $34.5 / 1M tokens, Web search (when used): $11.5 / 1,000 calls. One TryAI credit equals one cent charged; completed runs have a one-credit minimum and the aggregate cost is rounded up once.
- What can GPT-5.6 Sol do?
- GPT-5.6 Sol supports Streaming, Reasoning, Tool use, Web search, Vision, Documents with a context window of about 1.1M tokens.
- How do I try GPT-5.6 Sol?
- Create a free TryAI account, pick GPT-5.6 Sol from the model selector, and start generating in seconds.
Related models
GPT-6 Astra
NewChat & reasoning
250 credits to start
OpenAI's newest frontier model for complex reasoning, coding, and computer use, with a 1.05M-token context window. Self-reported 96.0 on GPQA and 91.5 on BrowseComp.
Try GPT-6 Astra→Claude Fable 5.1
NewChat & reasoning
250 credits to start
Anthropic's newest frontier model for coding, knowledge work, and long-horizon agentic runs. Beats both Fable 5 and Opus 5 on Terminal-Bench 4.0 (55.8%), CursorBench 3.2 (73.4%), and Humanity's Last Exam (65.0% with tools), at 75% cheaper cache reads than Fable 5.
Try Claude Fable 5.1→Claude Opus 5
Chat & reasoning
250 credits to start
Anthropic's everyday flagship for complex agentic coding and enterprise work. Ranks first overall on the AA Intelligence Index v4.1 at 63 with max effort.
Try Claude Opus 5→