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Grok 4.3

Grok 4.3 is a new model matching the scale of Grok 4.20 with an improved architecture and a December 2025 knowledge cutoff.

text + image + file → text · made by xAI

$1.25$2.5per Mtok in / out
xAI · 9 sellers

Sold by 17 ways

SellerLaneRate
xAI apibatch$1per Mtok in$2per Mtok outdocs.x.ai · read 2026-08-25
AWS Bedrock cloudstandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedmodels.dev · read 2026-09-16
Google Vertex AI 0 ways$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cached
Google Vertex AI cloudnot on the seller's list todaystandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedcloud.google.com · read 2026-08-24
Microsoft Azure AI cloudstandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedraw.githubusercontent.com · read 2026-09-16
xAI apistandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cacheddocs.x.ai · read 2026-08-25
Microsoft Azure AI cloudlong-context$2.5per Mtok in$5per Mtok out$0.4per Mtok cachedprices.azure.com · read 2026-08-24
xAI apilong-context$2.5per Mtok in$5per Mtok out$0.4per Mtok cacheddocs.x.ai · read 2026-08-25
Nous Research 2 ways$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cached
Nous Research aggregatorbatch$1per Mtok in$2per Mtok out$0.16per Mtok cachedinference-api.nousresearch.com · read 2026-09-12
Nous Research aggregatorstandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedinference-api.nousresearch.com · read 2026-09-12
OpenRouter 4 ways$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cached
OpenRouter aggregatorbatch$1per Mtok in$2per Mtok out$0.16per Mtok cachedopenrouter.ai · read 2026-09-04
OpenRouter aggregatorstandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedopenrouter.ai · read 2026-08-24
OpenRouter aggregatorxai/priority$2.5per Mtok in$5per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25
OpenRouter aggregatorxai/zdr/priority$2.5per Mtok in$5per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25
Requesty aggregatorxai$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedrouter.requesty.ai · read 2026-08-28
Vercel AI Gateway aggregatorstandard$1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedai-gateway.vercel.sh · read 2026-08-25
Venice AI aggregatorstandard$1.42per Mtok in$2.83per Mtok out$0.23per Mtok cachedmodels.dev · read 2026-09-16
ElectronHub aggregatorstandard$1.5per Mtok in$3.5per Mtok outapi.electronhub.ai · read 2026-09-16

Measured 47 standings

PlaceBoardMetricScore
12thof 13Design Arena · pptxslides (agents)Elo1071
14thof 15Design Arena · agentichtmlslides (agents)Elo1066
14thof 15Design Arena · agenticslides (agents)Elo1072
14thof 15Design Arena · agenticslides(html) (agents)Elo1066
14thof 15Design Arena · agenticslides(python-pptx) (agents)Elo1068
23rdof 24Blueprint bench 2 — Epoch AIScore0
23rdof 34LMArena · SearchScore (Elo)1165
26thof 81Forecastbench — Epoch AIOverall score60.4
30thof 161Dtbench — Epoch AIAccuracy (high)90.67
35thof 36Design Arena · htmlslides (agents)Elo1011
36thof 39Gdp pdf — Epoch AIGDP.pdf score0.08
39thof 40Design Arena · agenticgamedev (agents)Elo1007
40thof 42Design Arena · godotgamedev (agents)Elo1035
40thof 43Design Arena · python-pptxslides (agents)Elo1072
41stof 123Lmca — Epoch AIScore (high)38.33
43rdof 62Design Arena · webapps (agents)Elo1144
46thof 112Ale bench — Epoch AIPerformance944.17
46thof 106Frontiermath tiers 1 3 v2 — Epoch AImean_score (high)42.807
47thof 62Frontiermath tier 4 v2 — Epoch AImean_score (high)14.634
49thof 313GPQA Diamondmean_score (high)88.826
50thof 64Proofbench — Epoch AIAccuracy (high)11
51stof 152LMArena · VisionScore (Elo)1243
51stof 290OTIS Mock AIME 2024-2025mean_score (high)93.333
52ndof 80Simpleqa verified — Epoch AImean_score (high)33.2
54thof 55Design Arena · androidnative (agents)Elo973
56thof 60Vending bench 2 — Epoch AIScore35.262
60thof 64Design Arena · fullstack (agents)Elo1016
61stof 63Design Arena · mobileapps (agents)Elo1093
63rdof 222Chess puzzles — Epoch AImean_score (high)25
65thof 92Design Arena · asciiart (models)Elo1157
68thof 170Weirdml — Epoch AIAccuracy49.89
71stof 150Design Arena · uicomponent (models)Elo1206
73rdof 156Design Arena · codecategories (models)Elo1201
73rdof 155Design Arena · gamedev (models)Elo1197
74thof 177Critpt — Epoch AIAccuracy (high)8
76thof 152Design Arena · dataviz (models)Elo1198
77thof 162Design Arena · website (models)Elo1206
77thof 168Scicode — Epoch AIScore (high)47.338
81stof 402LMArena · TextScore (Elo)1443
83rdof 143Artificial Analysis · Agentic IndexIndex17.2
83rdof 109Design Arena · svg (models)Elo1110
88thof 147Design Arena · 3d (models)Elo1153
93rdof 121Webdev arena — Epoch AIArena Score1356.73
95thof 302Artificial Analysis · Intelligence IndexArtificial Analysis Intelligence Index (medium)25
96thof 128LMArena · WebDevScore (Elo)1357
110thof 184Artificial Analysis · Coding IndexIndex42.2
239thof 656Epoch capabilities index — Epoch AIECI Score (high)149.21

About

Grok 4.3 — a text model from xAI, sold by 9 companies from $1.25 in and $2.5 out per million tokens, placed 49th of 313 on GPQA Diamond.

It takes text, images and files and returns text, with a context window of 1,000,000 tokens. It was published in April 2026, trained on material up to November 2024. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning, code and agents. Nine companies sell it. The cheapest is $1.25 in and $2.5 out per million tokens at AWS Bedrock. Beside the standard rate there are separately routed, batch and faster lanes. It has been measured on 47 boards, and stands best at 49th of 313 on GPQA Diamond.

Every current figure

Maker
xAI
Register
model
Takes
text + image + file
Returns
text
Context
1,000,000 tokens
Published
April 2026
Knowledge to
November 2024
Licence
not read
Sellers
9
Price
$1.25 in and $2.5 out per million tokens — AWS Bedrock
Boards
47
Best place
49th of 313 — GPQA Diamond

Known as 6 names

grok-4.34.3x-ai/grok-4.3xai/grok-4.3spacexai/grok-4.3grok-4.3-latest