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Grok 4.5

API ID grok-4.5

grok-4.5 is an xAI model, released July 2026. Standard price: from $2.00 input and from $6.00 output per 1M tokens.

Status
Active
Released
July 2026
Shutdown
none announced
Replacement
—

No deprecation or shutdown date has been announced as of October 15, 2026.

Benchmarks

Scores as each source published them
or

Comparing with Grok 4.3, the previous model in this line. A score is compared only with the same benchmark from the same source, at the same setting where both have it. Full comparison: prices, limits, features

Arena

ArenaGrok 4.5Grok 4.3ChangeRankDateSource
Text
By category
  • Math 1472 rank 50 vs 1418 (+54)
  • Creative writing 1452 rank 36 vs 1422 (+30)
  • Instruction following 1461 rank 50 vs 1415 (+46)
  • Hard prompts 1488 rank 52 vs 1456 (+32)
  • Long prompts 1480 rank 48 vs 1443 (+37)
  • Multi-turn 1473 rank 53 vs 1447 (+26)
  • Expert 1488 rank 63 vs 1453 (+35)
1466 ±41442 ±4+2452 of 415
39,899 votes		Oct 13, 2026source
Text: Coding1514 ±71488 ±6+2648 of 410
11,118 votes		Oct 13, 2026source
WebDev1553 ±71357 ±6+19640 of 142
11,118 votes		Oct 13, 2026source
Vision1280 ±71243 ±6+3727 of 165
11,764 votes		Oct 9, 2026source
Search1206 ±61193 ±5+1316 of 42
76,458 votes		Oct 13, 2026source
Document1464 ±9not rated22 of 44
4,965 votes		Sep 13, 2026source
Agent0.001 ±0.011not rated32 of 54
41,828 sessions		Oct 14, 2026source

Rated as grok-4.5; Grok 4.3 as grok-4.3. Text, WebDev, Vision, Search and Document ratings come from people voting between two anonymous answers; Text, Vision, Search and Document are style-controlled, as on arena.ai. Agent is Arena's separate score for real agent sessions, on its own scale. Data: Arena (arena.ai), CC BY 4.0.

Epoch AI

BenchmarkGrok 4.5Grok 4.3ChangeSettingRunSource
FrontierMath Tier 424.4%14.6%+9.8 ptshigh effortJul 9, 2026source
FrontierMath Tiers 1-357.2%42.8%+14.4 ptshigh effortJul 9, 2026source
GPQA Diamond93.4%88.8%+4.6 ptshigh effortJul 8, 2026source
OTIS Mock AIME 2024-202597.8%93.3%+4.5 ptshigh effortJul 8, 2026source
SimpleQA Verified48.3%33.2%+15.1 ptshigh effortAug 27, 2026source

Run independently by Epoch AI. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Price history

USD per 1M tokens, standard tier
$0.00$2.00$4.00$6.00$8.00Oct 2026In $2.00Out $6.00Oct 5, 2026 to Oct 15, 2026: Input $2.00, Output $6.00
$0.00$2.00$4.00$6.00$8.00Oct 2026In $2.00Out $6.00Oct 5, 2026 to Oct 15, 2026: Input $2.00, Output $6.00

We started recording this model's prices on Oct 5, 2026. The history grows with each daily check.

Show as a table
FromTypePrice
Oct 5, 2026Input$2.00
Oct 5, 2026Output$6.00

Prices

USD per 1M tokens, every type and band, by tier
TypeBandPrice $/1MIn effect
Standard
inputup to 200k prompt$2.00
inputover 200k prompt$4.00
cached inputup to 200k prompt$0.30
cached inputover 200k prompt$0.60
outputup to 200k prompt$6.00
outputover 200k prompt$12.00

Changelog

Changes we detected on xAI's pages

No changes recorded yet.

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Last checked · Sources: xAI pricing, xAI notices, xAI release notes