OpenAI
GPT-5.6 Sol
Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows
Model facts
- Context window
- 1.05M tokens
- Maximum output
- 128K tokens
- Cheapest paid input
- $1 per 1M tokens
- Cheapest paid output
- $5 per 1M tokens
- Open weights
- no
- Providers
- 47
Capabilities and modalities
reasoning, tool calling, structured output, attachments, temperature control, text, image, pdf.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| max | 60.9 | 77.4 | not measured | 80.0 |
| xhigh | 59.0 | 78.3 | not measured | 74.4 |
| high | 57.3 | 77.2 | not measured | 77.8 |
| medium | 55.6 | 76.3 | not measured | 75.3 |
| low | 50.7 | 69.7 | not measured | 74.1 |
| Non-reasoning | 41.9 | 65.1 | not measured | 82.0 |
Observed price history
- 2026-08-24: $1 input / $5 output per 1M tokens
- 2026-08-28: $2 input / $10 output per 1M tokens
- 2026-08-31: $1 input / $5 output per 1M tokens
API providers
- GitLab Duo (Agentic Chat) — model id duo-chat-gpt-5-6-sol; free input / free output per 1M tokens; provider documentation
- Kenari — model id gpt-5-6-sol; free input / free output per 1M tokens; provider documentation
- OpenRouter (batch) — model id openai/gpt-5.6-sol:batch; $1 input / $5 output per 1M tokens; provider documentation
- Cloudflare AI Gateway — model id openai/gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- GitHub Copilot — model id gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- NanoGPT — model id openai/gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- OpenCode Zen (50% Off) — model id gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- OpenRouter — model id openai/gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- Vercel AI Gateway — model id openai/gpt-5.6-sol; $2 input / $10 output per 1M tokens; provider documentation
- Xpersona — model id gpt-5.6-sol; $1.5 input / $12 output per 1M tokens; provider documentation
- Ofox — model id openai/gpt-5.6-sol; $2.5 input / $15 output per 1M tokens; provider documentation
- routing.run — model id gpt-5.6-sol; $2.5 input / $15 output per 1M tokens; provider documentation
- Amazon Bedrock (Global) — model id global.openai.gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Azure — model id gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- DigitalOcean (OpenAI) — model id openai-gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Eden AI — model id openai/gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Eden AI — model id openai/gpt-latest; $4 input / $20 output per 1M tokens; provider documentation
- Kilo Gateway — model id openai/gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Kilo Gateway — model id openai/gpt-5.6-sol-pro; $4 input / $20 output per 1M tokens; provider documentation
- OpenAI — model id gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- OrcaRouter — model id openai/gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Requesty — model id gpt-5.6-sol; $4 input / $20 output per 1M tokens; provider documentation
- Vercel AI Gateway — model id openai/gpt-5.6-sol-fast; $4 input / $20 output per 1M tokens; provider documentation
- Amazon Bedrock — model id openai.gpt-5.6-sol; $4.4 input / $22 output per 1M tokens; provider documentation
- AI-ROUTER — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- AIHubMix — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Abacus — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Azure Cognitive Services — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- CrossModel — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Databricks — model id databricks-gpt-5-6-sol; $5 input / $30 output per 1M tokens; provider documentation
- DevPass (LLM Gateway) — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Impossibl — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- LLM Gateway (Azure) — model id azure/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- LLM Gateway (OpenAI) — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Merge Gateway — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Neon — model id gpt-5-6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Opper — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Pioneer — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- SAP AI Core — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Vivgrid — model id gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- ZenMux — model id openai/gpt-5.6-sol; $5 input / $30 output per 1M tokens; provider documentation
- Cortecs — model id gpt-5.6-sol; $5.5 input / $33 output per 1M tokens; provider documentation
- LLM Gateway (AWS Mantle) — model id aws-mantle/gpt-5.6-sol; $5.5 input / $33 output per 1M tokens; provider documentation
- Requesty (EU) — model id gpt-5.6-sol@eu; $5.5 input / $33 output per 1M tokens; provider documentation
- Venice AI — model id openai-gpt-56-sol; $6.25 input / $37.5 output per 1M tokens; provider documentation
- AgentRouter — model id gpt-5.6-sol; not published input / not published output per 1M tokens; provider documentation
- Snowflake Cortex — model id openai-gpt-5.6-sol; not published input / not published output per 1M tokens; provider documentation