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Model comparison
GPT-6.1 Sol vs Claude Sonnet 5.5
Compare GPT-6.1 Sol and Claude Sonnet 5.5 using the same provider-sourced text & reasoning rubric. No mystery score and no invented benchmark ranking.
Estimate your cost
Set your usage. Your estimate updates as you type.
Example: 6,000 input tokens for 10 pages, plus a 500-token summary. Page lengths vary; adjust the numbers below.
One run sends your input to the model once and receives an answer. Tokens are pieces of text: input is what you send, output is the answer you receive.
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How this estimate works
Estimates exclude taxes, tools, cache storage/writes, free allowances and custom discounts. Image estimates cover output only, not prompt or reference-image charges. Quality modes differ by model. Unlisted settings are not treated as free.
| Model | Access | Estimated total (USD) |
|---|---|---|
| Claude Sonnet 5.5Anthropic | Anthropic | $0.017 |
| GPT-6.1 SolOpenAI | OpenAI | $0.017 |
Quick take
GPT-6.1 Sol
An OpenAI reasoning model for complex coding, research and tool-assisted work at a lower token price than Astra.
Best for
- Codebase changes
- Multi-step workflows
- Long-document analysis with tools
Watch out for
This is a separate model from GPT-6 Sol. The none and minimal reasoning settings are not supported. Long prompts and reasoning tokens can increase cost, and Fast mode is unavailable with EU data residency.
Claude Sonnet 5.5
A Claude model for everyday coding, writing and visual analysis, with room for large reference documents.
Best for
- Everyday coding and bug fixes
- Reports and presentation drafts
- Reviewing text and images
Watch out for
Check existing API integrations before switching: use between_tools instead of disabled for the lowest thinking setting. Forced tool calls are not supported. Reasoning uses billed output tokens.
Compare the published facts
GPT-6.1 Sol vs Claude Sonnet 5.5
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Text & reasoning | GPT-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|
| Context windowMaximum combined prompt and working context documented by the provider. | 1.05M tokens | 1M tokens |
| Maximum outputProvider-published response limit, where available. | 128K tokens | 128K tokens |
| Knowledge cutoffLatest reliable knowledge date explicitly published by the model provider. Search and connected tools can retrieve newer information but do not change the model's built-in cutoff. | April 30, 2026 | June 2026 |
| Input priceCurrent standard list price per million input tokens unless noted. | $2 / 1M | $2 / 1M |
| Output priceCurrent standard list price per million output tokens unless noted. | $10 / 1M | $10 / 1M |
| InputsMedia types accepted by the listed model endpoint. | Text, image | Text, image |
| Tools & agentsSelected native tools and agent-building capabilities, not an exhaustive list. | Functions, search, code, computer, image, MCP | Tool use, agents, vision, coding workflows |
How to choose
Compare the job, not the hype.
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
GPT-6.1 Sol
OpenAI says API inputs and outputs are not used for model training by default. Default abuse-monitoring logs may be retained for up to 30 days; qualifying organizations can request other controls.
Provider and API links
Claude Sonnet 5.5
Anthropic does not train on API data without express permission. Retention depends on the API feature, account agreement and cloud provider.
Provider and API links
Frequently asked questions
GPT-6.1 Sol vs Claude Sonnet 5.5 FAQ
What is the main difference between GPT-6.1 Sol and Claude Sonnet 5.5?
GPT-6.1 Sol: An OpenAI reasoning model for complex coding, research and tool-assisted work at a lower token price than Astra. Claude Sonnet 5.5: A Claude model for everyday coding, writing and visual analysis, with room for large reference documents.
Should I choose GPT-6.1 Sol or Claude Sonnet 5.5?
Consider GPT-6.1 Sol when your priority is Codebase changes. Consider Claude Sonnet 5.5 when your priority is Everyday coding and bug fixes. Test both with your own data and provider route before committing.
Is this GPT-6.1 Sol vs Claude Sonnet 5.5 comparison based on Cody benchmarks?
No. This comparison aligns provider-published facts for the Text & reasoning category. It does not claim a universal winner or combine incompatible third-party benchmark scores.