Code Davinci 001 vs GPT-5.1 Codex Max
Code Davinci 001 (2021) and GPT-5.1 Codex Max (2025) are agentic coding models from OpenAI. Code Davinci 001 ships a not-yet-sourced context window, while GPT-5.1 Codex Max ships a not-yet-sourced context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads. It focuses on practical selection signals rather than broad model-family marketing.
GPT-5.1 Codex Max is safer overall; choose Code Davinci 001 when coding workflow support matters.
Decision scorecard
Local evidence first| Signal | Code Davinci 001 | GPT-5.1 Codex Max |
|---|---|---|
| Best for | custom coding agents and code generation | custom coding agents, code generation, and tool loops |
| Decision fit | Coding | Coding, Agents, and Vision |
| Context window | — | — |
| Cheapest output | - | $10/1M tokens |
| Provider routes | 0 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Local decision data tags Code Davinci 001 for Coding.
- GPT-5.1 Codex Max has broader tracked provider coverage for fallback and route flexibility.
- GPT-5.1 Codex Max uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags GPT-5.1 Codex Max for Coding, Agents, and Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Code Davinci 001
Unavailable
No complete token price in local provider data
GPT-5.1 Codex Max
$3,500
Cheapest tracked route/tier: Vercel AI Gateway
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Code Davinci 001 and GPT-5.1 Codex Max; plan for SDK, billing, or endpoint changes.
- GPT-5.1 Codex Max adds Vision, Multimodal, and Reasoning in local capability data.
- No overlapping tracked provider route is sourced for GPT-5.1 Codex Max and Code Davinci 001; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2021-07-01 | 2025-11-19 |
| Context window | — | — |
| Parameters | — | — |
| Architecture | Decoder Only | - |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Weights | Not released | Not released |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | - | 2024-09 |
Pricing and availability
| Pricing attribute | Code Davinci 001 | GPT-5.1 Codex Max |
|---|---|---|
| Input price | - | $1.25/1M tokens |
| Output price | - | $10/1M tokens |
| Providers | - |
Capabilities
| Capability | Code Davinci 001 | GPT-5.1 Codex Max |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | Yes |
| JSON / Tool use | No | Yes |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.