GPT-5.1 Codex (high) API Pricing
OpenAI · released 2025-11-13
Pricing
0.125¢ / 1K
1.00¢ / 1K
0.344¢ / 1K
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.362¢ |
| RAG query | 4,000 in / 500 out | $0.0100 |
| Long document summary | 50,000 in / 1,000 out | $0.0725 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.0575 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $108.75 |
Cost = (input tokens ÷ 1,000,000 × $1.25) + (output tokens ÷ 1,000,000 × $10.00).
Benchmarks
#94 of 533
#7 of 249
Similar intelligence, lower price
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Hy3-preview (Reasoning) | 22.7 | $0.10 |
| Ling 3.0 Flash | 24.9 | $0.111 |
| Ling-3.0-flash-VL | 24.6 | $0.111 |
| MiMo-V2-Flash (Reasoning) | 20.8 | $0.15 |
| DeepSeek V4 Flash 0420 (Reasoning, High Effort) | 26.0 | $0.168 |
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| GPT-5.4 mini (xhigh) | 24.1 | $1.688 |
| MiMo-V2-Omni | 23.9 | — |
| Claude Opus 4.5 (Non-reasoning) | 23.7 | $10.00 |
| GPT-5.1 Codex (high) | 23.7 | $3.438 |
| GLM 5V Turbo (Reasoning) | 23.5 | — |
| Kimi K2.5 (Reasoning) | 23.5 | $1.137 |
| Claude Sonnet 4.6 (Non-reasoning, Low Effort) | 23.3 | $6.00 |
More from OpenAI
| Model | Intelligence | Blended $/1M |
|---|---|---|
| GPT-6 Astra (max) | 52.7 | $20.00 |
| GPT-5.6 Sol (max) | 47.0 | $8.00 |
| GPT-5.6 Terra (max) | 42.1 | $4.50 |
| GPT-5.4 (xhigh) | 39.0 | $5.625 |
| GPT-5.5 (xhigh) | 38.4 | $11.25 |
| GPT-5.6 Luna (max) | 37.3 | $0.45 |
| GPT-5.3 Codex (xhigh) | 32.5 | $4.813 |
| GPT-5.2 (xhigh) | 30.4 | $4.813 |
Count tokens & estimate cost for GPT-5.1 Codex (high) See GPT-5.1 Codex (high) on the leaderboard
Source: Artificial Analysis · last synced 2026-09-22
FAQ
Who develops GPT-5.1 Codex (high)?
GPT-5.1 Codex (high) is developed by OpenAI, released 2025-11-13.
How much does GPT-5.1 Codex (high) cost per million tokens?
GPT-5.1 Codex (high) costs $1.25 per 1M input tokens and $10.00 per 1M output tokens ($3.438 blended), per Artificial Analysis's official pricing data.
How does GPT-5.1 Codex (high) rank on benchmarks?
GPT-5.1 Codex (high) scores 23.7 on the Artificial Analysis Intelligence Index, ranking #94 of 533 models we track.
Is there a cheaper model with similar intelligence to GPT-5.1 Codex (high)?
Yes — Hy3-preview (Reasoning) scores similar intelligence (22.7) at $0.10/1M blended, versus $3.438/1M for GPT-5.1 Codex (high).
Where does this data come from?
Pricing and benchmark data for GPT-5.1 Codex (high) comes from Artificial Analysis (artificialanalysis.ai), synced daily. Last synced 2026-09-22.