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AI Choice Engine

Model comparison

Grok 4.5 vs Grok 4.7

Two SpaceXAI tiers compared on the figures that decide which one a workload actually needs.

Catalog record checked September 26, 2026Individual provider fields may changeEvidence confidence: High — see receipts below

SpaceXAI

Grok 4.5

Balanced

vs

SpaceXAI

Grok 4.7

Frontier

AI model capability comparison
SpecificationGrok 4.5Grok 4.7
ProviderSpaceXAISpaceXAI
TierBalancedFrontier
Context window500K500K
Max outputNot verifiedUnverifiedNot verifiedUnverified
Input / 1M tokens$2$2
Output / 1M tokens$6$6
WeightsClosedClosed
ParametersNot disclosedUnverifiednew, larger base model with longer RL on multi-hour tasks
Reasoning levelslow, medium, high, xhighlow, medium, high, xhigh
Modalitiestext, imagetext, image
API model idgrok-4.5grok-4.7
ReleasedJuly 8, 2026September 21, 2026
Artificial Analysis Intelligence Index [high] (2026-09-26)38.8Not verifiedUnverified
Artificial Analysis Intelligence Index [xhigh] (2026-09-26)Not verifiedUnverified46.4
Terminal-Bench 2.1 (2026-07-16)83.3Not verifiedUnverified
DeepSWE 1.1 (2026-07)54Not verifiedUnverified
DeepSWE 1.1 [high] (2026-09-21)Not verifiedUnverified71
Terminal-Bench 4.0 [xhigh] (2026-09-26)Not verifiedUnverified25.8

Prices are USD per million tokens at standard rates, excluding batch and caching discounts. Bold indicates the better figure where one is objectively better. Values we could not confirm from the provider are shown as “Not verified” rather than estimated.

Benchmark receipts

Where each score comes from, and how far it can be compared across models.

Pricing tiers

Grok 4.5: $2/$6 per MTok (<200K prompt); $4/$12 (≥200K). Cached input $0.30/MTok ($0.60 at ≥200K). No published output cap.

Grok 4.7: $2/$6 per MTok (<200K prompt); $4/$12 for all tokens at ≥200K. Cached input $0.50/MTok ($1.00 at ≥200K). US regional endpoint 1.1x. No Batch API; the 2x-price 'Fast' variant is Cursor and Grok Build only. xAI lists no separate text-output cap. Knowledge cutoff May 2026.

BalancedRecord checked September 26, 2026

Grok 4.5

Grok 4.5 is xAI's balanced model with a 500K context and real-time X integration.

Best for

  • Real-time data queries
  • Technical tasks
  • Cost-sensitive reasoning

Watch out

Two generations behind Grok 4.7 at the same $2/$6 price — superseded; 500K context is smaller than the 1M-class models.

FrontierRecord checked September 26, 2026

Grok 4.7

Grok 4.7 is xAI's flagship since 2026-09-21 — a larger new base model with longer RL on multi-hour tasks, at Grok 4.6's $2/$6 price.

Best for

  • Coding agents
  • Cost-sensitive frontier work
  • Cursor and GitHub Copilot users

Watch out

Token rates double above a 200K-token prompt and there is no Batch API; the DeepSWE figure is vendor-reported.

When the cheaper one wins

Both charge $6 per million output tokens at standard rates, so output price is not the split. Prefer the row whose “best for” line matches the job, then confirm the live vendor rate.

Run the model picker

Evidence confidence: High

How strong and complete the evidence behind this comparison is — not a prediction of which model is better.

  • Pricing verified on both sides — Input and output rates are verified for both models.
  • 3/5 core specs verified on both sides — Not published for at least one side: max output, parameter count.
  • 3 shared named benchmarks with differing scores — Measured on: Artificial Analysis Intelligence Index, DeepSWE 1.1, DeepSWE 1.1.
  • Verified within the last 90 days — Newest catalog check was 2 days ago.
  • Both models carry source citations — Each side has at least two catalog sources on record.

Source receipts

Each catalog figure was checked against the provider or an independent second source on the date shown.

Related comparisons

Diving deeper on one model? Grok 4.5 · Grok 4.7

Common questions

Grok 4.5 vs Grok 4.7

Answered from the verified figures on this page rather than general guidance.

Is Grok 4.5 or Grok 4.7 cheaper for input?
Both cost $2 per million input tokens at standard rates, so input price is not a deciding factor between them.
Is Grok 4.5 or Grok 4.7 cheaper for output?
Both cost $6 per million output tokens at standard rates, so output price is not a deciding factor between them.
Which has the larger context window, Grok 4.5 or Grok 4.7?
Both accept about 500K tokens of context, so document length will not decide between them.
Do Grok 4.5 and Grok 4.7 support the same reasoning levels?
Yes — both accept the same effort settings: "low", "medium", "high", "xhigh". Higher effort costs more and takes longer, so start low and raise it only where output quality actually improves.
Should I use Grok 4.5 or Grok 4.7?
Grok 4.5 is the balanced tier and Grok 4.7 the frontier tier. The useful question is whether your hardest task actually fails on the cheaper one — most production volume such as classification, extraction and summarisation does not.

Next step

Choosing between them

The verified figures that separate this pair, computed from the catalog rather than restated boilerplate.

  • Measured capability: Grok 4.7 leads Artificial Analysis Intelligence Index 46.4 to 38.8 (measured 2026-09-26).
  • Positioning: Grok 4.5 sits in the balanced tier, Grok 4.7 in the frontier tier — most production volume (classification, extraction, summarisation) does not need the pricier tier.
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Choosing a harness rather than a model — Cursor, Copilot, Claude Code, Windsurf, or Lovable? Compare agentic harnesses · Latest releases.