XA
Grok Code Fast 1
xAI
xAI model product
Grok 4.3
3 is xAI's newest flagship general-purpose model.
Updated Aug 12, 2026. Default version: Grok 4.3
LLMBoard score40.7Grok 4.3
Coverage0%1 benchmark families
Context window1MTokens
Official input price$1.25xAI API
Grok 4.3 Specifications
Technical details for the model's default version.
- Version
- Grok 4.3
- Released
- May 6, 2026
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- 1M
- Max output
- 30K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Grok 4.3 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
No capability profile
No version of this model currently has enough benchmark coverage for a score.
Grok 4.3 Benchmark Results
Benchmark scores for Grok 4.3.
| Finance Agent v2 | 37.7% | 19 | 26 | 28.0% | B |
Grok 4.3 Arena Results
Preference and agent-evaluation results for the default version.
| search style control | overall | 16 | 1190.5 | 68,373 | N/A | |
| search factuality | overall | 19 | 1173.3 | 68,373 | N/A | |
| agent tool hallucination | overall | 21 | 0.0 | N/A | 1M | |
| search | overall | 21 | 1163.2 | 68,373 | N/A | |
| agent tool hallucination | overall | 27 | 0.0 | N/A | 1.4M | |
| agent steerability | overall | 37 | -0.1 | N/A | 78.4K | |
| agent steerability | overall | 38 | -0.1 | N/A | 64.2K | |
| agent | overall | 39 | -0.1 | N/A | 1.6M | |
| agent bash recovery steps | overall | 39 | -0.1 | N/A | 47.7K | |
| agent task outcome explicit | overall | 39 | -0.1 | N/A | 42K | |
| agent praise complaint | overall | 42 | -0.1 | N/A | 15.3K | |
| agent task outcome explicit | overall | 43 | -0.1 | N/A | 55.2K | |
| vision style control | overall | 44 | 1244.3 | 18,132 | N/A | |
| agent | overall | 45 | -0.1 | N/A | 1.2M | |
| agent bash recovery steps | overall | 45 | -0.4 | N/A | 50.8K | |
| agent praise complaint | overall | 46 | -0.2 | N/A | 18.9K | |
| vision | overall | 60 | 1231.3 | 18,132 | N/A | |
| text style control | overall | 74 | 1442.4 | 56,036 | N/A | |
| webdev | overall | 80 | 1355.3 | 11,860 | N/A | |
| text factuality | overall | 96 | 1429.2 | 55,965 | N/A | |
| text | overall | 132 | 1398.6 | 56,036 | N/A |
Grok 4.3 Runtime Performance
Provider-specific output speed and catalog latency for Grok 4.3. Runtime does not affect the capability score.
| xAI | 34.61 tok/s | 0.552 s | 1M | N/A |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Grok 4.3 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $1.25 input, $2.5 output per 1M
- Official provider
- xAI
- Lowest third-party
- From $1.25 input, $2.5 output per 1M via Impossibl
- Tracked offerings
- 21
| Impossibl | xai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| CrossModel | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| NanoGPT | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| FastRouter | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| DaoXE | grok-4.3 | global | $1.25 | $2.5 | 1M | |
| LLM Gateway | grok-4-3 | global | $1.25 | $2.5 | 1M | |
| FrogBot | grok-4-3 | global | $1.25 | $2.5 | 1M | |
| ZenMux | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Abacus | grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Auriko | grok-4.3 | global | $1.25 | $2.5 | 1M | |
| xAI | grok-4.3 | global | $1.25 | $2.5 | 1M | |
| AIHubMix | grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Ofox | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| OrcaRouter | grok/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Amazon Bedrock | xai.grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Kilo Gateway | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Merge Gateway | xai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Vercel AI Gateway | xai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| OpenRouter | x-ai/grok-4.3 | global | $1.25 | $2.5 | 1M | |
| Venice AI | grok-4-3 | global | $1.42 | $2.83 | 1M |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Grok 4.3 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Grok 4.3 | 40.7 | N/A | 1M | 30K | No | Proprietary |
What is Grok 4.3?
Key information about Grok 4.3 and its available data.
3 is xAI's newest flagship general-purpose model.
xAI describes it as the most intelligent and fastest model it has built, with a 1 million token context window, reasoning support, function calling, structured outputs, prompt caching, and industry-leading non-hallucination, agentic tool calling, and instruction-following capabilities.
Data as of 2026-08-11.
Grok 4.3 vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
Models similar to Grok 4.3
Recommendations prioritize the same model type and family, then the closest LLMBoard score.
XA
Grok 4.1
xAI
XA
Grok 3 Mini
xAI
XA
Grok 4.1 Thinking
xAI
XA
Grok 4 Fast
xAI
XA
Grok 3
xAI
FAQ
Common questions about Grok 4.3.
When was Grok 4.3 released?
Grok 4.3's default version was released on May 6, 2026.
How much does Grok 4.3 cost?
Grok 4.3's official API price is $1.25 per million input tokens and $2.5 per million output tokens via xAI. The lowest tracked third-party offer starts at $1.25 input and $2.5 output via Impossibl.
Who created Grok 4.3?
Grok 4.3 was created by xAI.
What is the context window for Grok 4.3?
The default version has a 1M token context window.
Is Grok 4.3 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Grok 4.3?
21 provider offerings are linked to the default version.
What models should I compare Grok 4.3 with?
Nearby ranked alternatives include GLM 4.5 Air, Qwen3.5 9B, Qwen3 Next 80B A3B Thinking.