// head_to_head
Gemini 4 Argon vs o3 Pro
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.
Gemini 4 Argon is the cheaper of the two; neither can be ranked on quality here.
o3 Pro 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.
Gemini 4 Argon
- Blended / 1M
- $4.00
- Context
- 1.0M
- Released
- Oct 13, 2026
- Overall score
- 79.3
openai
o3 Pro
- Blended / 1M
- $35.00
- Context
- 200K
- Released
- Jun 10, 2025
- Overall score
- Not evaluated
Specs and pricing
| Metric | Gemini 4 Argon | o3 Pro |
|---|---|---|
| LiveBench overall Weighted mean of the seven LiveBench category scores, 0–100. Higher is better. | 79.3 | — |
| Cost per point Measured benchmark spend divided by overall score — dollars per point of capability. | $0.0207 | — |
| Blended price / 1M 3:1 input:output mix, the usual shape of production traffic. | $4.00win | $35.00 |
| Input price / 1M | $2.00win | $20.00 |
| Output price / 1M | $10.00win | $80.00 |
| Cached input / 1M Price of an input token served from the prompt cache, where the provider publishes one. | $0.100 | — |
| Context window | 1.0Mwin | 200K |
| Max output tokens | 944Kwin | 100K |
Benchmarks by category
An overall score averages away the thing you probably care about. These are the seven LiveBench categories scored separately — Gemini 4 Argon on top, o3 Pro 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 | Gemini 4 Argon | o3 Pro |
|---|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $1,143/mo | $11,200/mo |
| RAG assistant 8K in / 600 out × 100K requests | $1,440/mo | $20,800/mo |
| Coding agent 40K in / 4K out × 20K requests | $1,336/mo | $22,400/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $2,655/mo | $26,000/mo |
| Bulk classification 500 in / 20 out × 5M requests | $5,050/mo | $58,000/mo |
Which should you pick?
You need to fit large documents in one call
Gemini 4 Argon
Wider context window — 1.0M against 200K.
Gemini 4 Argon vs o3 Pro FAQ
Which is better, Gemini 4 Argon or o3 Pro?
Gemini 4 Argon is the cheaper of the two; neither can be ranked on quality here. o3 Pro 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 Gemini 4 Argon cheaper than o3 Pro?
Gemini 4 Argon is cheaper. On a 3:1 input:output blend, Gemini 4 Argon lists at $4.00 per million tokens and o3 Pro at $35.00 — Gemini 4 Argon is 8.8× cheaper. Input and output are priced separately — Gemini 4 Argon charges $2.00 in and $10.00 out, o3 Pro charges $20.00 and $80.00 — so the model that looks cheaper flips depending on how output-heavy your workload is.
Does Gemini 4 Argon or o3 Pro have a bigger context window?
Gemini 4 Argon has the larger context window: 1.0M for Gemini 4 Argon against 200K for o3 Pro. 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 Gemini 4 Argon and o3 Pro support prompt caching?
Gemini 4 Argon publishes a cached-input rate of $0.100 per million tokens against a full input rate of $2.00. The catalogue lists no separate cached rate for o3 Pro, 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.