Kimi K3.1 Pro vs GPT-6 Sol
Moonshot's newest against GPT-6 Sol, priced identically at $2 in and $10 out: price will not decide this one, so it comes down to which answers your work better.
Figures as of , read live from the model registry Zeplik bills against.
What the numbers say
- Output pricing is close: 120 vs 120 credits per 1M tokens.
- Kimi K3.1 Pro is the newer release (October 2026 vs September 2026).
Derived from the live registry Zeplik routes and bills against. Credits: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.
Side by side
Kimi K3.1 Pro
MoonshotAI
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.
- Provider
- MoonshotAI
- Context window
- 1.0M tokens
- Input price
- 24.0 credits / 1M tokens ($2.00 raw)
- Output price
- 120 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 1.0M-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
GPT-6 Sol
OpenAI
GPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier.
- Provider
- OpenAI
- Context window
- 1.1M tokens
- Input price
- 24.0 credits / 1M tokens ($2.00 raw)
- Output price
- 120 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
Try both on Zeplik
The honest answer to most model debates is to run your own prompt on both. Zeplik puts Kimi K3.1 Pro and GPT-6 Sol in the same chat, so you can switch mid-conversation and compare answers on the work you actually do.
Frequently asked questions
- What is the difference between Kimi K3.1 Pro and GPT-6 Sol?
- Output pricing is close: 120 vs 120 credits per 1M tokens. Kimi K3.1 Pro is the newer release (October 2026 vs September 2026).
- Is Kimi K3.1 Pro or GPT-6 Sol cheaper?
- They cost the same on output tokens: 120 credits per million each. 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.
- Which has the larger context window, Kimi K3.1 Pro or GPT-6 Sol?
- GPT-6 Sol, at 1.1M tokens against 1.0M.
- Can I use both Kimi K3.1 Pro and GPT-6 Sol on Zeplik?
- Yes. Zeplik is a multi-model chat, so both sit behind one account and you can switch between them mid-conversation to compare answers on your own prompt.
- Do Kimi K3.1 Pro and GPT-6 Sol need a paid plan?
- Both need a paid plan (Plus or above). Usage is then billed in credits from your monthly allowance.
Related comparisons
- Claude Opus 5.5 vs GPT-6 SolBoth shipped on the same day at adjacent tiers: whether Opus 5.5's depth is worth double GPT-6 Sol's price when their context windows are within five percent of each other.
- GPT-6 Sol vs GPT-5.6 SolThe generational swap that also halves the bill: GPT-6 Sol replaces GPT-5.6 Sol at $2 in and $10 out, half what the model it supersedes now asks, on the same 1,050,000-token window.
- GPT-6 Sol vs GPT-6 AstraThe upgrade decision inside the GPT-6 line: Astra costs five times Sol for the same 1,050,000-token window, so the question is which work is hard enough to need it.
- GPT-6 Sol vs GPT-6 LunaGPT-6's capability tier against its value tier, twenty times apart on both input and output price with the same context window on each.
- GPT-6 Sol vs Claude Sonnet 5Priced identically at $2 in and $10 out, five percent apart on context: the closest like-for-like comparison in the catalogue, and a genuine toss-up on price alone.
- GPT-6 Sol vs Grok 4.7Two September flagships a day apart: Grok 4.7 undercuts GPT-6 Sol by half on output, and GPT-6 Sol answers with twice the context window.
Explore Zeplik
- 468 AI skillsReady-to-run expert methods that run on Kimi K3.1 Pro, GPT-6 Sol 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.