SpaceXAI
Grok 4.5
Grok 4.5 is a SpaceXAI model with 500K context, $2 in / $6 out per million tokens, last verified October 1, 2026. Open weights: no. Status: Superseded since September 21, 2026; the current pick is Grok 4.7. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.
Grok 4.5 is SpaceXAI's hosted reasoning model with a 500K-token context and configurable low, medium and high effort.
Recorded profile verification October 1, 2026Individual provider fields may change
| Specification | Grok 4.5 |
|---|---|
| Provider | SpaceXAI |
| Tier | Balanced |
| Context window | 500K |
| Max output | Not verifiedUnverified |
| Input / 1M tokens | $2 |
| Output / 1M tokens | $6 |
| Weights | Closed |
| Parameters | Not verifiedUnverified |
| Reasoning levels | low, medium, high |
| Modalities | text, image |
| API model id | grok-4.5 |
| Released | July 8, 2026 |
Pricing tiers: Standard $2/$6 per MTok below 200K prompt tokens; at 200K or more the full request bills $4/$12. Cached input $0.30 short or $0.60 long. US regional inference adds 10%. No separate text-output cap is verified.
Publisher evidence
Published benchmark results
Each result keeps its source date visible. Dates refer to source publication or capture unless the source explicitly states when it measured the result. A missing benchmark is not treated as a zero.
| Benchmark | Score | Source date | Source |
|---|---|---|---|
| Terminal-Bench 2.1 | 83.3% | 2026-07-16 | xAI — Introducing Grok 4.5 (vendor) · View source |
| DeepSWE 1.1 | 53% | 2026-07-16 | xAI — Introducing Grok 4.5 (vendor; Datacurve-run) · View source |
| DeepSWE 1.1 | 54% | 2026-07 | Google DeepMind 3.6 Flash evaluation report (vendor-authored cross-model comparison; distinct observation from xAI's 53, with run comparability unverified) · View source |
Best for
- Real-time data queries
- Technical tasks
- Cost-sensitive reasoning
Watch out
History
Grok 4.5 timeline
Release and status events for this model that passed two-source verification — dated, sourced, and linked.
- Grok 4.5Availability updateJuly 16, 2026
SpaceXAI's formal Grok 4.5 launch post, a week after the July 8 API release.
SpaceXAI announcement - Grok 4.5ReleaseJuly 8, 2026xAI API release notes
Source receipts
Catalog figures for this model were checked against the following sources.
- Whole-profile primary source check October 1 (accessed 2026-10-01)
- Whole-profile primary source check October 1 (accessed 2026-10-01)
- SpaceXAI API release notes — Grok4.5 July8, EU availability July17 (accessed 2026-10-01)
- SpaceXAI formal Grok4.5 announcement (July16; API release separately July8) (accessed 2026-08-29)
- xAI pricing (grok-4.5 $2/$6, 500K) (accessed 2026-08-29)
- SpaceXAI reasoning API (Grok 4.5 effort mapping) (accessed 2026-10-01)
Common questions
Grok 4.5
Answered from the verified figures on this page rather than general guidance.