// head_to_head
Kimi K3.1 Pro vs GPT Audio
Published LiveBench scores across all seven categories, live list pricing, context windows, and the measured cost of a point of capability — for both models, side by side.
Kimi K3.1 Pro and GPT Audio are priced within ~10% of each other.
GPT Audio does not have a published LiveBench run, so this comparison covers price, context and declared capabilities only. A missing score means "not evaluated", not "worse" — the right way to separate these two is an eval on your own workload.
moonshotai
Kimi K3.1 Pro
- Blended / 1M
- $4.00
- Context
- 1.0M
- Released
- Oct 23, 2026
- Overall score
- 71.3
openai
GPT Audio
- Blended / 1M
- $4.38
- Context
- 128K
- Released
- Jan 19, 2026
- Overall score
- Not evaluated
Specs and pricing
| Metric | Kimi K3.1 Pro | GPT Audio |
|---|---|---|
| LiveBench overall Weighted mean of the seven LiveBench category scores, 0–100. Higher is better. | 71.3 | — |
| Cost per point Measured benchmark spend divided by overall score — dollars per point of capability. | $0.0104 | — |
| Blended price / 1M 3:1 input:output mix, the usual shape of production traffic. | $4.00 | $4.38 |
| Input price / 1M | $2.00win | $2.50 |
| Output price / 1M | $10.00 | $10.00 |
| Cached input / 1M Price of an input token served from the prompt cache, where the provider publishes one. | $0.200 | — |
| Context window | 1.0Mwin | 128K |
| Max output tokens | 944Kwin | 16K |
Benchmarks by category
An overall score averages away the thing you probably care about. These are the seven LiveBench categories scored separately — Kimi K3.1 Pro on top, GPT Audio below, both out of 100.
What each one costs to run
Per-token prices are hard to feel. These are monthly list costs for both models across five workload shapes, using each provider's published cached-input rate where there is one.
| Workload | Kimi K3.1 Pro | GPT Audio |
|---|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $1,150/mo | $1,400/mo |
| RAG assistant 8K in / 600 out × 100K requests | $1,480/mo | $2,600/mo |
| Coding agent 40K in / 4K out × 20K requests | $1,392/mo | $2,800/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $2,660/mo | $3,250/mo |
| Bulk classification 500 in / 20 out × 5M requests | $5,100/mo | $7,250/mo |
Which should you pick?
You need to fit large documents in one call
Kimi K3.1 Pro
Wider context window — 1.0M against 128K.
Kimi K3.1 Pro vs GPT Audio FAQ
Which is better, Kimi K3.1 Pro or GPT Audio?
Kimi K3.1 Pro and GPT Audio are priced within ~10% of each other. GPT Audio does not have a published LiveBench run, so this comparison covers price, context and declared capabilities only. A missing score means "not evaluated", not "worse" — the right way to separate these two is an eval on your own workload.
Is Kimi K3.1 Pro cheaper than GPT Audio?
They cost about the same. Both land near $4.00 per million tokens on a 3:1 input:output blend, so price is unlikely to be the deciding factor between them.
Does Kimi K3.1 Pro or GPT Audio have a bigger context window?
Kimi K3.1 Pro has the larger context window: 1.0M for Kimi K3.1 Pro against 128K for GPT Audio. Note that a window you can fill is not a window you should fill — retrieval quality usually degrades well before the limit, and you pay for every token you put in it.
Do Kimi K3.1 Pro and GPT Audio support prompt caching?
Kimi K3.1 Pro publishes a cached-input rate of $0.200 per million tokens against a full input rate of $2.00. The catalogue lists no separate cached rate for GPT Audio, which means the provider does not price it separately here — not that caching is unavailable.
Related comparisons
How these numbers are produced
- Price — provider list price from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
- Scores — LiveBench release 2026-10-25, using their own category map. Each model shows its strongest published run. A blank means “not evaluated”, never “bad”.
- Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.
- “Win” — awarded only past a threshold: one full point on a benchmark score, 10% on a price, 25% on a context window. Anything tighter reports as a tie, because effort settings alone move a LiveBench score by more than that.
Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.