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SpaceXAI: Grok 4.5

x-ai/grok-4.5

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Modalities
In / out price
$2 / $6per 1M
Context
500K
Released
Jul 8, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

  • Not used in Standard routing:Why these endpoints are not used

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input
$1.008/M tokens
Output
$6.127/M tokens
Price history
No effective price data for this selection
  • Not used in Standard routing:Why these endpoints are not used

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Throughput
66tok/s

P50, best across providers

Latency
1.46s

P50, best provider

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)The model was reachable. Request routed to a provider.
100.00%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
99.57%

Availability over the last 3 days

Last 72 hours
Availability 99.57%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.24%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for SpaceXAI: Grok 4.5 (Artificial Analysis, Design Arena and Vals AI)
SourceBenchmarkScore
Artificial AnalysisGrok 4.5 (High) Coding Index72.4
Artificial AnalysisGrok 4.5 (High) Agentic Index41.2
Artificial AnalysisGrok 4.5 (High) GPQA Diamond93.1%
Artificial AnalysisGrok 4.5 (High) HLE42.7%
Artificial AnalysisGrok 4.5 (High) AA-LCR79.3%
Artificial AnalysisGrok 4.5 (High) τ-Bench Banking42.1%
Artificial AnalysisGrok 4.5 (High) GDPval-AA44.4%
Artificial AnalysisGrok 4.5 (High) CritPt15.4%
Artificial AnalysisGrok 4.5 (High) SciCode55.0%
Artificial AnalysisGrok 4.5 (High) Terminal-Bench 4.010.6%
Artificial AnalysisGrok 4.5 (High) Terminal-Bench 2.181.6%
Design ArenaGrok 4.5 Agents Arena Agenticgamedev Elo1179
Design ArenaGrok 4.5 Agents Arena Androidnative Elo1228
Design ArenaGrok 4.5 Agents Arena Blender3d Elo1053
Design ArenaGrok 4.5 Agents Arena Codetovideo Elo1110
Design ArenaGrok 4.5 Agents Arena Full Stack Elo1220
Design ArenaGrok 4.5 Agents Arena Godotgamedev Elo1206
Design ArenaGrok 4.5 Agents Arena Htmlslides Elo1099
Design ArenaGrok 4.5 Agents Arena Mobile Apps Elo1207
Design ArenaGrok 4.5 Agents Arena Pdf Elo1128
Design ArenaGrok 4.5 Agents Arena Python-Pptxslides Elo1198
Design ArenaGrok 4.5 Agents Arena Spreadsheet Elo1041
Design ArenaGrok 4.5 Agents Arena Webapps Elo1194
Design ArenaGrok 4.5 Models Arena 3D Elo1235
Design ArenaGrok 4.5 Models Arena Asciiart Elo1248
Design ArenaGrok 4.5 Models Arena Code Categories Elo1264
Design ArenaGrok 4.5 Models Arena Data Visualization Elo1264
Design ArenaGrok 4.5 Models Arena Game Development Elo1251
Design ArenaGrok 4.5 Models Arena SVG Elo1200
Design ArenaGrok 4.5 Models Arena UI Component Elo1269
Design ArenaGrok 4.5 Models Arena Website Elo1273
Vals AIGrok 4.5 Code Migration36.6%
Vals AIGrok 4.5 CorpFin v267.4%
Vals AIGrok 4.5 CyberBench v1.171.0%
Vals AIGrok 4.5 EMB52.9%
Vals AIGrok 4.5 Finance Agent (v2)48.3%
Vals AIGrok 4.5 GPQA Diamond92.9%
Vals AIGrok 4.5 Harvey's Legal Agent Benchmark v112.9%
Vals AIGrok 4.5 IOI40.6%
Vals AIGrok 4.5 LiveCodeBench87.4%
Vals AIGrok 4.5 LegalBench86.0%
Vals AIGrok 4.5 Legal Research Bench38.0%
Vals AIGrok 4.5 MedCode43.3%
Vals AIGrok 4.5 MedScribe86.9%
Vals AIGrok 4.5 MMLU Pro89.2%
Vals AIGrok 4.5 MMMU Pro61.8%
Vals AIGrok 4.5 MortgageTax61.8%
Vals AIGrok 4.5 ProgramBench0.0%
Vals AIGrok 4.5 ProofBench v1.131.0%
Vals AIGrok 4.5 SAGE v135.0%
Vals AIGrok 4.5 SkillsBench66.0%
Vals AIGrok 4.5 SRE Bench0.8%
Vals AIGrok 4.5 SWE-bench86.6%
Vals AIGrok 4.5 Tax Agent Bench24.9%
Vals AIGrok 4.5 TaxEval v271.7%
Vals AIGrok 4.5 Terminal-Bench 4.08.6%
Vals AIGrok 4.5 Vals Index44.7%
Vals AIGrok 4.5 Vals Multimodal Index63.4%
Vals AIGrok 4.5 Vibe Code Bench v1.169.0%
Vals AIGrok 4.5 Vals Web Search Index35.5%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

1.
Favicon for https://pi.dev/
pi
90.1Btokens
2.
Favicon for https://nousresearch.com
Hermes Agent
20Btokens
3.
7.53Btokens
4.
Favicon for https://omp.sh/
omp
new
3.59Btokens
5.
Favicon for https://roocode.com/
Roo Code
3.53Btokens
Rest of OpenRouter
3.52B
Top 5 Apps
1.05B

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

xAI: Grok versions

Not currently available through EU in-region routing. In-region routing docs

Frequently asked questions