MODEL PROOF
Grok 4.3
TRADE-OFF
A stored alternative has an equal-or-higher score and an equal-or-lower price, with capability losses.
Base context tier shown; inspect the complete context ladder below.
MiMo-V2.6-Pro · Δ score 93.5 points · 65% lower measured price
- 900K → 131K max output
- no file input
- Independent LMArena score
- 1,396.8 ± 3.61 · 71,387 votes
- Context window
- 1M
- Maximum output
- 900K
- Input modalities
- text, image, file
- Output modalities
- text
- Published input price
- $1.25 / 1M tokens
- Published output price
- $2.50 / 1M tokens
- Pricing kind
- fixed
- Context tiers
- Tiered by context
Inspect complete billing conditions and endpoint terms below.
Price from xAI: the cheapest offer that is serving, at standard delivery, with at least 90% of the reference context and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $1.25/M |
|---|---|
| Output | $2.50/M |
| Cached input | $0.200/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.005/call |
The headline rate does not apply to a long-context workload.
Complete context ladder · 1 tier
| More than 200,000 tokens | $2.50/M in (2×) $5.00/M out $0.400/M cached input Unknown/M cache write |
|---|
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
4 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| xAIxai/zdr Endpoint terms
| $1.25 | $2.50 | undeclared | 94.28% |
| xAIxai Endpoint terms
| $1.25 | $2.50 | undeclared | 98.30% |
| xAIxai/zdr/priority Endpoint terms
| $2.50 | $5.00 | undeclared | 100.00% |
| xAIxai/priority Endpoint terms
| $2.50 | $5.00 | undeclared | 100.00% |
Independent scores
| LMArena Elo | 1396.8default |
|---|---|
| LMArena row | grok-4.3 |
LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.
Best rankings by task
- Pptxslides #8 1071
- Agentichtmlslides #9 1066
- Agenticslides(html) #9 1066
- Agenticslides #9 1072
- Agenticslides(python pptx) #9 1068
- Htmlslides #23 1008
- Agenticgamedev #24 1007
- Python pptxslides #26 1072
Per-task Elo and rank from Design Arena, via OpenRouter’s model feed. The rank is the feed’s, and it counts models OpenRouter does not list.
Capability
| Context window | 1M |
|---|---|
| Max output | 900K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-16 |
| Quality data | verified |
| Cross-checked | vendor page |
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
Questions this page answers
What does Grok 4.3 cost?
$1.25/M in, $2.50/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Grok 4.3 have an independent quality score?
Grok 4.3 has an LMArena score in this catalogue.
What beats Grok 4.3?
MiMo-V2.6-Pro has an equal-or-higher measured score and an equal-or-lower price, with capability trade-offs.
Does this page use Artificial Analysis scores for Grok 4.3?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
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