GPT-5.6 Sol
GPT-5.6 SolAlternatives?
CheaperGPT-6.1 Solmax+4%-39%$0.72Remove unsupported parameters+5
OpenMuse Spark Openxhigh-2%-29%$0.84Context: 1.05M → 1M+2Lower effortSame modelhighsame-32%$0.81
CheaperClaude Opus 5.5low+2%-53%$0.55Context: 1.05M → 1M+6CheaperGPT-6 Astralow+2%-31%$0.82Monitoring can return HTTP 403+2GPT-6.1 Solmax+4%-39%$0.72Remove unsupported parameters+5Claude Opus 5.5low+2%-53%$0.55Context: 1.05M → 1M+6GPT-6 Astralow+2%-31%$0.82Monitoring can return HTTP 403+2
Gemini 3.8 Flashlow+2%-81%*$0.75 / $3.75Context: 1.05M → 1M+2GPT-6 Solmaxsame-12%$1.04GPT-6.1 Solhigh+3%-73%$0.32Remove unsupported parameters+5Claude Opus 5.5low+2%-53%$0.55Context: 1.05M → 1M+6Gemini 3.8 Flashhigh+4%+5%*$1.24Context: 1.05M → 1M+2GPT-6 Astramedium+3%+30%$1.54Monitoring can return HTTP 403+2Claude Opus 5max+3%+395%$5.86Context: 1.05M → 1MMuse Spark OpenxhighOpen-2%-29%$0.84Context: 1.05M → 1M+2
DeepSeek V4.1 Flash 1017maxOpen-2%-78%$0.26Context: 1.05M → 1M+5
Kimi K3maxOpen-3%+69%$2.00Context: 1.05M → 1M+4
Qwen3.8 FlashthinkingOpen-3%-69%$0.37Context: 1.05M → 262K+6Kimi K2.6thinkingOpen-4%-32%$0.80Context: 1.05M → 256KGPT-6 Astraxhigh+4%+95%$2.31Monitoring can return HTTP 403+2GPT-6.1 Solxhigh+3%-67%$0.39Remove unsupported parameters+5GPT-6 Solxhighsame-56%$0.52GPT-5.5xhigh-3%+122%$2.63Prompts with >272K input tokensGPT-6 Lunaxhigh-4%-96%$0.042Function calling only with none · Chat Completions+3GPT-5.6 Terraxhigh-4%-47%$0.63Prompts with >272K input tokensGPT-5.6 Lunaxhigh-5%-93%$0.085GPT-5.3 Codexxhigh-5%—$1.75 / $14Context: 1.05M → 400K+1All OpenAI models →History
3 versionsBenchmarks
in Vision & DocumentsFAQ
How much does GPT-5.6 Sol cost?›
$4 per 1M input tokens and $20 per 1M output tokens; cached input $0.40 per 1M. A typical benchmark task costs about $1.18 at xhigh effort.
Is GPT-5.6 Sol free to use?›
There is no free API; the cheapest paid price is $4 per 1M input tokens.
How good is GPT-5.6 Sol, and what is it best at?›
#17 of 334 in Chat & Knowledge, #26 of 132 in Coding, #30 of 133 in Agents & Tool Use, #12 of 195 in Writing & Language, #9 of 124 in Vision & Documents. Strongest at: Coding, Agents & work tasks, Reasoning, Science, Long context, Knowledge, Instructions, Vision.
Is GPT-5.6 Sol better than Claude Opus 5?›
On MMMU-Pro (vision), GPT-5.6 Sol scores 83.4 vs 84.7 — lower. It is 80% cheaper per task.
How can I use GPT-5.6 Sol?›
Through the API of Amazon Bedrock, Azure, OpenAI.
What is the context window of GPT-5.6 Sol?›
1.05M tokens, with up to 128K output tokens.
When was GPT-5.6 Sol released? Is there a newer version?›
Released 2026-07-09. It has been superseded by GPT-6 Sol.
Is GPT-5.6 Sol open source?›
No, GPT-5.6 Sol is a closed model available through an API. The closest open-weights option here is Muse Spark Open.
Can GPT-5.6 Sol read images?›
It accepts text and images, PDF files as input.
What is GPT-5.6 Sol?›
GPT-5.6 Sol is a closed language model from OpenAI, released Jul 2026, the successor to GPT-4.
What are the best alternatives to GPT-5.6 Sol?›
GPT-6.1 Sol (cheaper), Muse Spark Open (open weights).