Compare · ModelsLive · 2 picked · head to head
GPT-5.3-Codex vs GPT-5.4 Mini
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.3-Codex wins on 3/5 benchmarks
GPT-5.3-Codex wins 3 of 5 shared benchmarks. Leads in agentic · coding.
Category leads
speed·GPT-5.4 Miniagentic·GPT-5.3-Codexcoding·GPT-5.3-Codex
Hype vs Reality
Attention vs performance
GPT-5.3-Codex
#73 by perf·#4 by attention
GPT-5.4 Mini
#209 by perf·#4 by attention
Best value
GPT-5.4 Mini
2.0x better value than GPT-5.3-Codex
GPT-5.3-Codex
7.1 pts/$
$7.88/M
GPT-5.4 Mini
14.3 pts/$
$2.63/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
5 benchmarks · 2 models
GPT-5.3-CodexGPT-5.4 Mini
Artificial Analysis · Agentic Index
GPT-5.3-Codex leads by +32.0
Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?"
GPT-5.3-Codex
62.2
GPT-5.4 Mini
30.2
Artificial Analysis · Coding Index
GPT-5.4 Mini leads by +3.0
Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads.
GPT-5.3-Codex
53.1
GPT-5.4 Mini
56.1
Artificial Analysis · Quality Index
GPT-5.4 Mini leads by +7.5
GPT-5.3-Codex
32.5
GPT-5.4 Mini
40.0
APEX-Agents
GPT-5.3-Codex leads by +7.1
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
GPT-5.3-Codex
31.7
GPT-5.4 Mini
24.6
WeirdML
GPT-5.3-Codex leads by +19.0
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GPT-5.3-Codex
79.3
GPT-5.4 Mini
60.3
Full benchmark table
| Benchmark | GPT-5.3-Codex | GPT-5.4 Mini |
|---|---|---|
Artificial Analysis · Agentic Index Artificial Analysis Agentic Index · a composite score measuring how well a model performs in agentic workflows · multi-step tool use, planning, error recovery, and autonomous task completion. Aggregates results from multiple agentic benchmarks including SWE-bench, tool-use tests, and planning evaluations. The canonical single-number metric for "how good is this model as an agent?" | 62.2 | 30.2 |
Artificial Analysis · Coding Index Artificial Analysis Coding Index · a composite score that aggregates performance across multiple coding benchmarks into a single index. Tracks code generation quality, debugging ability, multi-language competence, and real-world software engineering tasks. Used by Artificial Analysis to rank model coding capability in a normalized, comparable format. Useful for developers choosing between models for coding-heavy workloads. | 53.1 | 56.1 |
Artificial Analysis · Quality Index | 32.5 | 40.0 |
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 31.7 | 24.6 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 79.3 | 60.3 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $1.75 | $14.00 | 400K tokens (~200 books) | $48.13 | |
| $0.75 | $4.50 | 400K tokens (~200 books) | $16.88 |