// head_to_head
Gemini 4 Argon vs SpaceXAI: Grok 4.5
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 scores higher, SpaceXAI: Grok 4.5 costs less — it depends on your workload.
Gemini 4 Argon is ahead by 14.0 points overall, and SpaceXAI: Grok 4.5 lists 33% cheaper per blended million tokens. Whether 14.0 points is worth that depends on how much a wrong answer costs you. SpaceXAI: Grok 4.5 also leads on measured cost per point of capability, at $0.5008 per point.
Gemini 4 Argon
- Blended / 1M
- $4.00
- Context
- 1.0M
- Released
- Oct 13, 2026
- Overall score
- 84.1
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SpaceXAI: Grok 4.5
- Blended / 1M
- $3.00
- Context
- 500K
- Released
- Jul 8, 2026
- Overall score
- 70.1
Specs and pricing
| Metric | Gemini 4 Argon | SpaceXAI: Grok 4.5 |
|---|---|---|
| LiveBench overall Mean of the seven LiveBench category scores, 0–100. Higher is better. | 84.1win | 70.1 |
| Cost per point Measured benchmark spend divided by overall score — dollars per point of capability. | $1.24 | $0.5008win |
| Blended price / 1M 3:1 input:output mix, the usual shape of production traffic. | $4.00 | $3.00win |
| Input price / 1M | $2.00 | $2.00 |
| Output price / 1M | $10.00 | $6.00win |
| Cached input / 1M Price of an input token served from the prompt cache, where the provider publishes one. | $0.100win | $0.300 |
| Context window | 1.0Mwin | 500K |
| Max output tokens | 66K | 450Kwin |
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, SpaceXAI: Grok 4.5 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 | SpaceXAI: Grok 4.5 |
|---|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $1,143/mo | $837.60/mo |
| RAG assistant 8K in / 600 out × 100K requests | $1,440/mo | $1,280/mo |
| Coding agent 40K in / 4K out × 20K requests | $1,336/mo | $1,128/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $2,655/mo | $2,365/mo |
| Bulk classification 500 in / 20 out × 5M requests | $5,050/mo | $4,750/mo |
Which should you pick?
You are running this at volume
SpaceXAI: Grok 4.5
Lowest measured cost per point of capability at $0.5008 per point — the gap compounds with every request.
Quality matters more than the bill
Gemini 4 Argon
Highest overall LiveBench score of the two at 84.1.
The workload is coding or agentic work
SpaceXAI: Grok 4.5
Leads on coding — 94.3 against 89.7.
You need to fit large documents in one call
Gemini 4 Argon
Wider context window — 1.0M against 500K.
Gemini 4 Argon vs SpaceXAI: Grok 4.5 FAQ
Which is better, Gemini 4 Argon or SpaceXAI: Grok 4.5?
Gemini 4 Argon scores higher, SpaceXAI: Grok 4.5 costs less — it depends on your workload. Gemini 4 Argon is ahead by 14.0 points overall, and SpaceXAI: Grok 4.5 lists 33% cheaper per blended million tokens. Whether 14.0 points is worth that depends on how much a wrong answer costs you. SpaceXAI: Grok 4.5 also leads on measured cost per point of capability, at $0.5008 per point.
Is Gemini 4 Argon cheaper than SpaceXAI: Grok 4.5?
SpaceXAI: Grok 4.5 is cheaper. On a 3:1 input:output blend, Gemini 4 Argon lists at $4.00 per million tokens and SpaceXAI: Grok 4.5 at $3.00 — SpaceXAI: Grok 4.5 is 33% cheaper. Input and output are priced separately — Gemini 4 Argon charges $2.00 in and $10.00 out, SpaceXAI: Grok 4.5 charges $2.00 and $6.00 — so the model that looks cheaper flips depending on how output-heavy your workload is.
Gemini 4 Argon vs SpaceXAI: Grok 4.5: which scores higher on benchmarks?
Gemini 4 Argon scores 84.1 and SpaceXAI: Grok 4.5 scores 70.1 overall on LiveBench, the mean of its seven categories. That is a 14.0-point lead for Gemini 4 Argon. Category scores differ from the overall figure — a model can lead on reasoning and trail on coding, which the per-category table above breaks out.
Which gives better value for money, Gemini 4 Argon or SpaceXAI: Grok 4.5?
SpaceXAI: Grok 4.5. Cost per point divides the measured dollars LiveBench spent running the benchmark by the score it earned, so it captures something token pricing misses: a reasoning model can emit many times more tokens than its per-token rate suggests. Gemini 4 Argon works out at $1.24 per point and SpaceXAI: Grok 4.5 at $0.5008.
Does Gemini 4 Argon or SpaceXAI: Grok 4.5 have a bigger context window?
Gemini 4 Argon has the larger context window: 1.0M for Gemini 4 Argon against 500K for SpaceXAI: Grok 4.5. 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 SpaceXAI: Grok 4.5 support prompt caching?
Both publish a cached-input rate: $0.100 per million for Gemini 4 Argon and $0.300 for SpaceXAI: Grok 4.5, against full input rates of $2.00 and $2.00. On a workload with a long stable prefix — a system prompt, a tool schema, a retrieved corpus — that changes the economics more than the headline price does.
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 2026-09-02, 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.