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Model Pareto

GPT-5.3 Codex

OpenAIProprietaryartificialanalysis.ai ↗
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Input
$1.75/M tok
Output
$14/M tok
Blended
$4.813/M tok · 3:1
Speed
145tok/s
Context
400Ktokens

Long-tail import from Artificial Analysis (2026-09-24); AA variant: GPT-5.3 Codex (xhigh). Price = AA median host price.

Rankings

Benchmark scores

~ italic, dashed = no published score yet, estimated from related benchmarks.

Writing & chat

MMMLUEstimated
~#2 of 5 (estimated)~89.8%
  1. #1Gemini 3.1 Pro92.6%
  2. ~#2GPT-5.3 CodexEstimated89.8%
  3. #2Gemma 4 31B88.4%
No published score — estimated from related benchmarks
LMArena Text, Non-English (Elo)Estimated
~#16 of 54 (estimated)~1454 Elo
  1. #1Claude Opus 5.51501
  2. #2Claude Fable 5.1Few votes1496
  3. #15GPT-5.6 Terra1456
  4. ~#16GPT-5.3 CodexEstimated1454
  5. #16DeepSeek V4 Pro (0813)1448
No published score — estimated from related benchmarks
LMArena Text (Elo)Estimated
~#16 of 54 (estimated)~1465 Elo
  1. #1Claude Opus 5.51509
  2. #2Claude Fable 5.11501
  3. #15GPT-5.6 Terra1466
  4. ~#16GPT-5.3 CodexEstimated1465
  5. #16DeepSeek V4 Pro (0813)1463
No published score — estimated from related benchmarks
EQ-Bench Creative Writing v3 (Elo)Estimated
~#9 of 26 (estimated)~1961 Elo
  1. #1GPT-6 Astra2173
  2. #2Claude Fable 5.12162
  3. #8Grok 4.72007
  4. ~#9GPT-5.3 CodexEstimated1961
  5. #9Muse Spark 1.31906
No published score — estimated from related benchmarks

Vision

MMMUEstimated
~#2 of 3 (estimated)~71.3%
  1. #1Claude Haiku 4.573.2%
  2. ~#2GPT-5.3 CodexEstimated71.3%
  3. #2Llama 4 Maverick69.4%
No published score — estimated from related benchmarks
CharXiv ReasoningEstimated
~#5 of 9 (estimated)~82.6%
  1. #1Gemini 3.8 Flash86.2%
  2. #2Kimi K384.8%
  3. #4Qwen3.8-Omni-Flash83.5%
  4. ~#5GPT-5.3 CodexEstimated82.6%
  5. #5Muse Glimmer78.8%
No published score — estimated from related benchmarks
OmniDocBench v1.5Estimated
~#4 of 8 (estimated)~88.7%
  1. #1MiniMax-M391.6%
  2. #2Kimi K391.1%
  3. #2Qwen3.8 27B91.1%
  4. ~#4GPT-5.3 CodexEstimated88.7%
  5. #4Gemini 3.1 Pro85.3%
No published score — estimated from related benchmarks
GDP.pdf (AA)Estimated
~#15 of 43 (estimated)~18.4%
  1. #1GPT-6 Astra31.0%
  2. #2Muse Spark 1.326.6%
  3. #14MiMo-V2.6-Pro19.2%
  4. ~#15GPT-5.3 CodexEstimated18.4%
  5. #15Gemini 3.1 Pro17.8%
No published score — estimated from related benchmarks
ChartographyEstimated
~#7 of 23 (estimated)~31.9%
  1. #1GPT-6 Astra71.0%
  2. #2Claude Opus 5.566.3%
  3. #6GPT-5.6 Terra34.0%
  4. ~#7GPT-5.3 CodexEstimated31.9%
  5. #7GPT-5.531.0%
No published score — estimated from related benchmarks

Hard reasoning

AIME (latest)Estimated
~#2 of 25 (estimated)~96.6%
  1. #1Inkling97.1%
  2. ~#2GPT-5.3 CodexEstimated96.6%
  3. #2Muse Glimmer94.7%
No published score — estimated from related benchmarks
AA Intelligence IndexEstimated
~#21 of 75 (estimated)~38.5
  1. #1Claude Opus 5.557.6
  2. #2Claude Sonnet 5.556.0
  3. #20DeepSeek V4.1 Flash39.5
  4. ~#21GPT-5.3 CodexEstimated38.5
  5. #21GPT-5.538.4
No published score — estimated from related benchmarks

Agents

OSWorld-VerifiedEstimated
~#5 of 12 (estimated)~82.0%
  1. #1Kimi K384.8%
  2. #2Qwen3.8 27B84.3%
  3. #4MiMo-V2.6-Pro82.0%
  4. ~#5GPT-5.3 CodexEstimated82.0%
  5. #5Claude Sonnet 581.2%
No published score — estimated from related benchmarks
OSWorld 2.0Estimated
~#3 of 5 (estimated)~53.8%
  1. #1GLM-5.3 Flash59.1%
  2. #2Kimi K358.3%
  3. ~#3GPT-5.3 CodexEstimated53.8%
  4. #3GPT-5.6 Terra50.2%
No published score — estimated from related benchmarks
BrowseCompEstimated
~#14 of 18 (estimated)~77.9%
  1. #1Atria Dawn Preview92.5%
  2. #2GPT-6 Astra91.5%
  3. #13Nex-N2.5-Mini83.4%
  4. ~#14GPT-5.3 CodexEstimated77.9%
  5. #14Inkling77.1%
No published score — estimated from related benchmarks
GDPval-AA (Elo)Estimated
~#16 of 87 (estimated)~1533 Elo
  1. #1Claude Opus 5.51846
  2. #2Claude Fable 5.11735
  3. #15GPT-6 Astra1542
  4. ~#16GPT-5.3 CodexEstimated1533
  5. #16Kimi K31524
No published score — estimated from related benchmarks
AutomationBench-AAEstimated
~#24 of 80 (estimated)~44.3%
  1. #1Claude Opus 5.569.5%
  2. #2DeepSeek V4.1 Flash68.9%
  3. #23GPT-5.547.3%
  4. ~#24GPT-5.3 CodexEstimated44.3%
  5. #24K2 Horizon 375B A23B37.2%
No published score — estimated from related benchmarks
τ-Bench Banking (AA)Estimated
~#22 of 89 (estimated)~32.0%
  1. #1Muse Spark 1.350.5%
  2. #2GLM-5.350.3%
  3. #21K2 Horizon MoVA 36B A4B32.0%
  4. ~#22GPT-5.3 CodexEstimated32.0%
  5. #22Inkling29.1%
No published score — estimated from related benchmarks