Grok 4.5
xAIdocs.x.ai/developers/models/grok-4.5
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
Updated 26 min ago · first seen 11 Sept 2026
model_01M294WVVWY3VBKBXRMAT2KYXT
- Context
- 500K tokens
- T2 · 2 h ago
- Released
- 8 Jul 2026
- T2 · 2 h ago
Specification
- Family
- Grok
Source:xAI — docsT1observed 30 min agohigh
- Release date
- 8 Jul 2026
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Openness
- proprietary
Source:Artificial AnalysisT2observed 26 min agomedium
- Context window
- 500K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Max output
- 450K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Modalities
- image, text
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Input modalities
- text, image
Source:xAI — docsT1observed 30 min agohigh
- Output modalities
- text
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Tokenizer
- Grok
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- API model id
- grok-4.5
Source:xAI — docsT1observed 30 min agohigh
- Official page
Source:xAI — docsT1observed 30 min agohigh
- Batch api
- No
Source:xAI — docsT1observed 30 min agohigh
- File input
- Yes
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Aa median output tokens per second
- 54.8
Source:Artificial AnalysisT2observed 26 min agomedium
- Openrouter id
- x-ai/grok-4.5
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Reasoning effort options
- low, medium, high, xhigh
Source:xAI — docsT1observed 30 min agohigh
- Regions
- us-east-1, us-west-2
Source:xAI — docsT1observed 30 min agohigh
- Supported parameters
- include_reasoning, logprobs, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →
Provenance
Attributed facts
23
Source tiers
T1T27 / 16
Freshest observation
26 min ago
Conflicts
None
Modalities
- Modalities
- imagetext
- Input
- textimage
- Output
- text
Capabilities
Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable
- Context window
- 500K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Max output
- 450K tokens
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
- Tokenizer
- Grok
Source:OpenRouter public model & pricing listingT2observed 2 h agomedium
| Benchmark | Score | Metric | Config | Evaluated | Source |
|---|---|---|---|---|---|
| Artificial Analysis Intelligence Index | 39.08 | index | aa_slug=grok-4-5 · version=4.3 · estimated=false | — | artificialanalysis.aiT2 |
| GPQA | 93.13% | accuracy | aa_slug=grok-4-5 · variant=GPQA Diamond · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Humanity's Last Exam | 42.68% | accuracy | aa_slug=grok-4-5 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| LiveBench | 68.59% | category:Coding | release=2026-06-25 · subtasks=["code_generation","code_completion"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 56.47% | category:Agentic Coding | release=2026-06-25 · subtasks=["javascript","typescript","python"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 90.83% | category:Mathematics | release=2026-06-25 · subtasks=["AMPS_Hard","integrals_with_game","math_comp","olympiad"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 73.04% | category:Data Analysis | release=2026-06-25 · subtasks=["consecutive_events","tablejoin","tablereformat"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 75.77% | global_average | release=2026-06-25 · aggregation=mean of category averages; category = mean of its subtasks · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 82.8% | category:Language | release=2026-06-25 · subtasks=["connections","plot_unscrambling","typos"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 71.53% | category:IF | release=2026-06-25 · subtasks=["paraphrase","simplify","story_generation","summarize"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| LiveBench | 87.17% | category:Reasoning | release=2026-06-25 · subtasks=["theory_of_mind","zebra_puzzle","spatial","logic_with_navigation"] · livebench_model_id=grok-4.5 | 25 Jun 2026 | livebench.aiT2 |
| MMMU-Pro | 80.4% | accuracy | aa_slug=grok-4-5 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| SciCode | 54.98% | accuracy | aa_slug=grok-4-5 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Terminal-Bench | 81.65% | accuracy | aa_slug=grok-4-5 · variant=v2.1 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
| Terminal-Bench | 10.61% | accuracy | aa_slug=grok-4-5 · variant=v4.0 · evaluator=Artificial Analysis · index_version=4.3 | — | artificialanalysis.aiT2 |
Scores are reported as published, with their evaluation configuration (harness, prompting, judge). Results with different configs are not directly comparable — see methodology.
Current prices
| Provider | Input / 1M | Output / 1M | Cached in | Batch in / out | Context | Observed | Source |
|---|---|---|---|---|---|---|---|
| xAI APIx-ai/grok-4.5 | $2 | $6 | $0.30 | — | 500K | 31 min ago | openrouter.aiT2 |
| xAI APIgrok-4.5 | $2 | $6 | $0.30 | — | 500K | 30 min ago | docs.x.aiT1 |
USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.
Available through 1
Price history
Input price · USD / 1M tokens
Output price · USD / 1M tokens
- xAI API
No hardware estimate available
No lineage recorded
Papers 0
No papers linked yet.
Repositories 0
No repositories linked yet.
As of
Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.
Claim history · Max output
Max outputmax_output_tokens1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 450K tokens | → current | current | OpenRouter public model & pricing listingT2 | medium | deterministic |
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
Grok 4.5 scores 39.08 on Artificial Analysis Intelligence Index
artificial_analysisGrok 4.5: modalities input changed from ["image", "text"] to ["text", "image"]
Input modalitiesimage, text→text, imagexai
| Source | Document | Type | Tier | Last observed | Snapshots |
|---|---|---|---|---|---|
| xAI — docs | docs.x.ai/developers/models/grok-4.5.md | model_page | T1· Official | 30 min ago | 1 |
| xAI — docs | docs.x.ai/developers/models | model_docs | T1· Official | 30 min ago | 1 |
| LiveBench | livebench.ai/table_2026_06_25.csv | leaderboard | T2· Quality secondary | 25 min ago | 1 |
| Artificial Analysis | artificialanalysis.ai/leaderboards/models | leaderboard | T2· Quality secondary | 26 min ago | 1 |
| OpenRouter public model & pricing listing | openrouter.ai/api/v1/models | catalogue | T2· Quality secondary | 31 min ago | 2 |
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.