GPT-5.6 Sol
GPT-5.6 SolAlternatives?
CheaperGPT-6.1 Solmax+59%-50%$2 / $10Remove unsupported parameters+5BetterGPT-5.6 Lunaxhigh+25%-67%$0.085
OpenGLM 5.3max+52%+669%$2.01Context: 1.05M → 1M+5
CheaperClaude Sonnet 5.5max+55%-50%$2 / $10Context: 1.05M → 1M+6CheaperGPT-6 Solmax+55%-50%$2 / $10GPT-6.1 Solmax+59%-50%$2 / $10Remove unsupported parameters+5Claude Sonnet 5.5max+55%-50%$2 / $10Context: 1.05M → 1M+6GPT-6 Solmax+55%-50%$2 / $10
Muse Spark 1.3xhigh+49%-75%$1.25 / $4.25Context: 1.05M → 1M+6GPT-5.6 Lunamax+48%-32%$0.18GPT-5.6 Lunaxhigh+25%-67%$0.085GLM 5.3 FlashmaxOpen+40%+9%$0.28Context: 1.05M → 1M+5GPT-5.6 Terrahigh+19%+30%$0.34Prompts with >272K input tokensGPT-6 Astralow+48%+214%$0.82Monitoring can return HTTP 403+2
Grok 4.5high+19%+238%$0.88Context: 1.05M → 500KGLM 5.3maxOpen+52%+669%$2.01Context: 1.05M → 1M+5
Kimi K3maxOpen+51%+667%$2.00Context: 1.05M → 1M+4GLM 5.3 FlashmaxOpen+40%+9%$0.28Context: 1.05M → 1M+5
DeepSeek V4 Pro 0813maxOpen+39%-75%$1.32 / $3.96Context: 1.05M → 1M+6DeepSeek V4.1 Flash 1017maxOpen+18%-93%$0.30 / $1.20Context: 1.05M → 1M+5GPT-6.1 Solmax+59%—$2 / $10Remove unsupported parameters+5GPT-6 Solmax+55%—$2 / $10GPT-6 Astralow+48%+214%$0.82Monitoring can return HTTP 403+2GPT-6 Lunamax+48%—$0.10 / $0.50Function calling only with none · Chat Completions+3GPT-5.4xhigh+14%—$2.50 / $15GPT-5.5low-40%—$5 / $30Prompts with >272K input tokensGPT-5.6 Terralow-47%-45%$0.14Prompts with >272K input tokensGPT-5.6 Lunalow-97%-96%$0.01All OpenAI models →History
3 versionsBenchmarks
in CodingFAQ
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 $0.26 at low 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?›
#48 of 334 in Chat & Knowledge, #53 of 132 in Coding, #41 of 133 in Agents & Tool Use, #12 of 195 in Writing & Language, #12 of 124 in Vision & Documents. Strongest at: Reasoning, Science, Long context, Knowledge, Vision.
Is GPT-5.6 Sol better than Claude Opus 5?›
On DeepSWE 1.1, GPT-5.6 Sol scores 72.7 vs 73.6 — about the same. It is 96% 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 It has been superseded by GPT-6 Sol.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 GLM 5.3.
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), GPT-5.6 Luna (better), GLM 5.3 (open weights).