Grok 4.5
- Next shutdown
- None setNo date on 1 platform
- Arena Text
- 1,466#28 of 128 · Arena
- GPQA Diamond
- 93.4%#14 of 108 · Epoch AI
- List price · $ per 1M
- $2.00 in $6.00 outxAI API · cached input $0.30
- Context window
- 500Ktokens
Dates on every platform
1 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| xAI APIxAI: grok-4.5 model page (opens in a new tab) · checked Oct 14, 2026us-east-1, us-west-2 | grok-4.5Active · also grok-4.5-latest, grok-build-latest | – | None set | – |
The alias grok-build-latest points to grok-4.5, not to grok-build-0.1.
Batch API requests are not supported.
What breaks when you move off Grok 4.5
No breaking changes are recorded for the move to Grok 4.6. Run your own cases on it before the date.
Intelligence
Third-party results, credited below
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,466 ± 2 | #28 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 93.4% ± 1.4% | #14 of 108 | Jul 8, 2026 |
| Arena WebDev | Arena | 1,553 ± 3 | #24 of 69 | Oct 8, 2026 |
| Arena Agent | Arena | 0 ± 0 | #25 of 35 | Oct 12, 2026 |
| FrontierMath Tier 4 | Epoch AI | 24.4% ± 6.8% | #37 of 58 | Jul 9, 2026 |
| FrontierMath Tiers 1-3 | Epoch AI | 57.2% ± 2.9% | #38 of 71 | Jul 9, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 97.8% ± 1.3% | #23 of 105 | Jul 8, 2026 |
| SimpleQA Verified | Epoch AI | 48.3% ± 1.6% | #26 of 68 | Aug 27, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
xAI APIgrok-4.5 | $2.00 | $0.30 | $6.00 | Oct 14, 2026Current · Requests whose prompt reaches 200k tokens are billed at twice these rates for all tokens in the request. | xAI: Models (opens in a new tab) |
Change history
ReleaseGrok 4.5 released on the xAI APIxAI API
xAI released grok-4.5 for coding, agentic tasks and knowledge work, with a 500k context window and configurable reasoning effort.
- Platform
- xAI API
- Model
- Grok 4.5
Source: xAI, Release Notes (opens in a new tab); xAI, Introducing Grok 4.5 (opens in a new tab)