Grok 4.5
xai/grok-4.5
smartest model for coding, agentic tasks, knowledge work.
cmd --model xai/grok-4.5
Intelligence index
55.8
Output speed
51 tok/s
Input
$2 /M
Output
$6 /M
Cache read
$0.50 /M
Agent-loop cost
$0.95 /M in
Context window
500K tokens
Released
July 8, 2026
Modalities
→
vs. the lineup
Grok 4.5 beside its stablemates and nearest rivals. The ◆ marks the best value in each column across every row shown.
pin a rival:
| Model | Intelligence | Coding | Speed | Input $/M | Output $/M | Blended $/M | Context |
|---|---|---|---|---|---|---|---|
| Muse Spark 1.2 | 56.8◆ | 72.2◆ | —◆ | $1.25◆ | $4.25◆ | $2◆ | 1.05M◆ |
| GPT-5.6 Terra | 56.6◆ | 76.7◆ | 120.5◆ | $2◆ | $12◆ | $4.50◆ | 1.05M◆ |
| GPT-5.5 | 56.3◆ | 74.9◆ | —◆ | $5◆ | $30◆ | $11.25◆ | 200K◆ |
| Grok 4.5 ◆ | 55.8◆ | 72.4◆ | 51◆ | $2◆ | $6◆ | $3◆ | 500K◆ |
| Step 3.7 Flash | 30.9◆ | 39.6◆ | 391.3◆ | $0.20◆ | $1.15◆ | $0.44◆ | 256K◆ |
| Grok 4.6 | —◆ | —◆ | —◆ | $2◆ | $6◆ | $3◆ | 500K◆ |
| DeepSeek V4 Pro (latest)pinned | 45.3◆ | 59.4◆ | 63.3◆ | $0.43◆ | $0.87◆ | $0.54◆ | 1M◆ |
| DeepSeek V4 Flash (latest)pinned | 52◆ | 69.1◆ | 115.9◆ | $0.14◆ | $0.28◆ | $0.18◆ | 1M◆ |
coding performance
The Intelligence Index and its sub-scores, ranked against every scored model in the catalog. A metric that has not been measured for Grok 4.5 has been left empty.
Coding Index
72.4
#9 of 40 scored
Terminal-Bench
81.6
#9 of 40 scored
Intelligence Index
55.8
#10 of 46 scored
Long-context reasoning
74
reasoning across a long context
SciCode
54.1
scientific coding
GPQA Diamond
93.1
graduate-level QA
usage calculator
How far a month of credits goes on Grok 4.5.
Input tokensfresh prompt
800Output tokensmodel reply
180Cache read tokensre-read context
50Kcost / request $0.028 · in $2 · out $6 · cache $0.50 per M
fresh input 6%output 4%cache reads 90%
Requests / 30 days
361
$10 credits ÷ $0.028 per request
~72 quick fixes~14 bug fixes~2 feature PRs
what real work costs
Real coding tasks priced end to end on Grok 4.5, from a quick lookup to a full-repo agent run.
One agent task
$0.23
180K in at 75% cache hit, 12K out
What you pay
$1.20 /M
all-in across every token that task touched
Sticker input
$2 /M
cache reads bill at $0.50 /M instead
| Task | Tokens in · out | Grok 4.5 | Muse Spark 1.2 | Claude Haiku 4.5 |
|---|---|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.01 | $0.0063 | $0.0065 |
| Review a 500-line PR | 60K · 4K | $0.08 | $0.05 | $0.04 |
| Fix a bug (agent loop) | 180K · 12K | $0.23 | $0.13 | $0.12 |
| Refactor a module | 320K · 20K | $0.41 | $0.23 | $0.21 |
| Full-repo agent run | 900K · 45K | $1.02 | $0.54 | $0.49 |
frequently asked
What is Grok 4.5 best for?+
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
How much does Grok 4.5 cost?+
$2/M input and $6/M output, cache reads $0.50/M. In an agent loop most input is cache-read, so the effective input rate is about $0.95/M.Which plan do I need?+
Available on Go and above.
How do I switch to it?+
Run
cmd --model xai/grok-4.5, or type /model in a session and pick it. You can switch mid-session without losing context.Ship code that matches your taste
Command Code is the AI coding agent that continuously learns your taste. Start for $1.
Benchmarks from Artificial Analysis (v4.1)commandcode.ai/models/grok-4-5