GPT-5.6 Sol vs Claude Opus 5
The new head-to-head at the very top: OpenAI's flagship against Anthropic's million-token Opus 5 premium tier.
What the numbers say
- GPT-5.6 Sol is about 2.5x cheaper on output tokens (110 vs 275 credits per 1M).
- Claude Opus 5 is the newer release (July 2026 vs July 2026).
Derived from the live registry Zeplik routes and bills against. Credits: 1 credit = $0.10, raw provider rate with a 1.10x margin.
Side by side
GPT-5.6 Sol
OpenAI
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...
- Provider
- OpenAI
- Context window
- 1.1M tokens
- Input price
- 22.0 credits / 1M tokens ($2.00 raw)
- Output price
- 110 credits / 1M tokens ($10.00 raw)
- Vision (image input)
- Yes
- Tool calling
- Yes
- Extended reasoning
- No
Best for
- Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
- Very long documents and codebases: a 1.1M-token window fits entire books or repositories in one conversation
- Working with images: screenshots, charts, photos and scanned documents alongside text
- Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows
Claude Opus 5
Anthropic
Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...
- Provider
- Anthropic
- Context window
- 1M tokens
- Input price
- 55.0 credits / 1M tokens ($5.00 raw)
- Output price
- 275 credits / 1M tokens ($25.00 raw)
- Vision (image input)
- Yes
- Tool calling
- Yes
- Extended reasoning
- No
Best for
- Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
- Very long documents and codebases: a 1M-token window fits entire books or repositories in one conversation
- Working with images: screenshots, charts, photos and scanned documents alongside text
- Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows
Try both on Zeplik
The honest answer to most model debates is to run your own prompt on both. Zeplik puts GPT-5.6 Sol and Claude Opus 5 in the same chat, so you can switch mid-conversation and compare answers on the work you actually do.
Explore Zeplik
- 465 AI skillsReady-to-run expert methods that run on GPT-5.6 Sol, Claude Opus 5 or any other model.
- 997 integrationsConnect Gmail, Slack, GitHub, Notion and hundreds more so the assistant can work in your apps.
- Simple pricingPlus, Pro and Max plans with a monthly credit allowance that works across every model.