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About
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Related Models
Pricing
Input
$1.25
per 1M tokens
Output
$10.00
per 1M tokens
Blended
$3.44
per 1M tokens
Cheaper than 18% of models. Median price is $0.56/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$3.44
Monthly
$103.13
vs. Similar Models
OpenAI: GPT-5Q:0.0
$3.440%
Anthropic: Claude Sonnet 4.6Q:-0.2
$6.00+75%
DeepSeek V4 Flash (Reasoning, High Effort)Q:+0.3
$0.17-95%
MiMo-V2-Omni-0327Q:+0.3
$0.80-77%
Performance
169
tokens/sec
Faster than 85% of models
6.37
seconds
Faster than 15% of models
6.37
seconds
Faster than 44% of models
Market Median
86 tok/s
97% faster
Median TTFT
1.07s
494% slower
Throughput/Dollar
49
tok/s per $/1M
Speed Comparison
LongCat Flash Lite
169 tok/s-0%
OpenAI: GPT-5.1-Codex
170 tok/s+0%
GPT-5.4 mini (medium)
170 tok/s+0%
Context Window
400K
tokens
Larger than 79% of models
Max Output
128K
tokens
32% of context
Benchmarks
MMLU-Pro
86.5%
GPQA Diamond
83.7%
HLE
25.6%
LiveCodeBench
84.0%
SciCode
40.9%
TerminalBench Hard
37.9%
MATH-500Not evaluated
AIMENot evaluated
AIME 2025
98.7%
IFBench
74.1%
Long Context Recall
69.0%
Tau2
86.8%
Market AverageTop Score