GPT-5 Codex
DeprecatedGPT-5 Codex is OpenAI's language model with a 400K context window and up to 128K output tokens, available from 3 providers, starting at $0.125 / 1M input and $10.00 / 1M output. A GPT-5 variant optimized for agentic coding tasks in Codex environments, available via the Responses API with regularly updated snapshots.
| Benchmarks | |
|---|---|
| Intelligence Index | #121 |
| Math Index | #2 |
| MMLU-Pro | #19 |
| GPQA | #122 |
| HLE | #108 |
| LiveCodeBench | #21 |
| IFBench | #35 |
| Time to First Token | #552 |
| SciCode | #151 |
| AIME 2025 | #2 |
| LCR | #132 |
| TerminalBench Hard | #51 |
| TAU2 | #85 |
| Output TPS | #53 |
Capabilities
Input3/5
Text✓
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities7/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling✓
Structured Outputs✓
Native JSON Schema✓
Web Search✓
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
| $1.25 | $11.00 | $0.138 | |
| $0.125 | N/A | N/A | |
| $1.25 | $10.00 | $0.125 | |
| $1.25 | $10.00 | $0.13 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| GPT-6.1 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-6 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-6 Luna | 1.1M | $0.100 | $0.500 | Available | |
| GPT-6 Astra | 1.1M | $10.00 | $50.00 | Available | |
| GPT-5.6 Sol | 1.1M | $4.00 | $20.00 | Available | |
| GPT-5.6 Terra | 1.1M | $2.00 | $12.00 | Available | |
| GPT-5.6 Luna | 1.1M | $0.200 | $1.20 | Available | |
| GPT-5.5 | 1.1M | $5.00 | $30.00 | Available | |
| GPT-5.4 Mini | 400K | $0.750 | $4.50 | Available | |
| GPT-5.4 Nano | 400K | $0.200 | $1.25 | Deprecating | |
| GPT-5 Codex | 400K | $0.125 | $10.00 | Current |