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Model comparison
GPT-5.6 Sol vs Grok 4.6
Compare GPT-5.6 Sol and Grok 4.6 using the same provider-sourced text & reasoning rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
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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.
Advanced options
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) |
|---|---|---|
| GPT-5.6 SolOpenAI | OpenAI | $0.034 |
| Grok 4.6SpaceXAI | SpaceXAI | No reviewed rate |
Quick take
GPT-5.6 Sol
OpenAI's flagship general model for difficult coding, analysis, and professional work, with a very large context window and a broad native tool set.
Best for
- Complex coding and repository work
- Long-document analysis with tools
- General agents that need OpenAI's hosted tool ecosystem
Watch out for
Budget with the long-context multiplier, cached-input rules, tool charges, and reasoning tokens—not only the headline input/output rate.
Grok 4.6
SpaceXAI's frontier text-and-image model for coding, agentic tasks, and knowledge work, with direct web, X, and code tools.
Best for
- Coding agents with live web or X context
- Tool-heavy knowledge workflows
- Teams already building on OpenAI-compatible APIs
Watch out for
Published regions are narrower than a generic 'global' label, and the base token rate doubles for long-context requests.
Compare the published facts
GPT-5.6 Sol vs Grok 4.6
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-5.6 Sol | Grok 4.6 |
|---|---|---|
| Context windowMaximum combined prompt and working context documented by the provider. | 1.05M tokens | 500K tokens |
| Maximum outputProvider-published response limit, where available. | 128K tokens | No published text cap |
| 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. | February 16, 2026 | January 2026 |
| Input priceCurrent standard list price per million input tokens unless noted. | $4 / 1M | $2 / 1M |
| Output priceCurrent standard list price per million output tokens unless noted. | $20 / 1M | $6 / 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, web/file search, code, computer, MCP | Functions, web/X search, code execution |
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-5.6 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
Grok 4.6
SpaceXAI says API inputs and outputs are never used for training without explicit permission. Requests are encrypted and retained for 30 days by default; team-level zero data retention is available with feature tradeoffs.
Provider and API links
Frequently asked questions
GPT-5.6 Sol vs Grok 4.6 FAQ
What is the main difference between GPT-5.6 Sol and Grok 4.6?
GPT-5.6 Sol: OpenAI's flagship general model for difficult coding, analysis, and professional work, with a very large context window and a broad native tool set. Grok 4.6: SpaceXAI's frontier text-and-image model for coding, agentic tasks, and knowledge work, with direct web, X, and code tools.
Should I choose GPT-5.6 Sol or Grok 4.6?
Consider GPT-5.6 Sol when your priority is Complex coding and repository work. Consider Grok 4.6 when your priority is Coding agents with live web or X context. Test both with your own data and provider route before committing.
Is this GPT-5.6 Sol vs Grok 4.6 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.