GPT-5.2 Codex vs Gemini 1.0 Pro
Compare pricing, context windows, and strengths for GPT-5.2 Codex by OpenAI and Gemini 1.0 Pro by Google - and see how to put either to work in Appaca.
GPT-5.2 Codex
Highly capable coding model optimized for long-horizon, agentic coding tasks with configurable reasoning and strong codebase awareness.
View GPT-5.2 CodexGemini 1.0 Pro
A versatile multimodal model optimized for balanced performance across reasoning, language, and code tasks.
View Gemini 1.0 ProGPT-5.2 Codex vs Gemini 1.0 Pro at a glance
Specs and pricing side by side, from the Appaca AI models directory.
| Spec | GPT-5.2 Codex | Gemini 1.0 Pro |
|---|---|---|
| Provider | OpenAI | |
| Model type | Text | Text |
| Context window | 400K tokens | 128K tokens |
| Input price | $1.75 / 1M tokens | $0.5 / 1M tokens |
| Output price | $14 / 1M tokens | $1.5 / 1M tokens |
| Status | Superseded by GPT-5.3 Codex | Current |
How GPT-5.2 Codex and Gemini 1.0 Pro differ
What the numbers mean in practice when choosing between GPT-5.2 Codex and Gemini 1.0 Pro.
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Gemini 1.0 Pro is 71% cheaper on input tokens ($0.5 vs $1.75 per million), which adds up quickly in document-heavy workloads.
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Gemini 1.0 Pro is 89% cheaper on output tokens ($1.5 vs $14 per million) - the bigger factor for tools that generate long documents.
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GPT-5.2 Codex's 400K tokens context window is roughly 3.1x larger than Gemini 1.0 Pro's 128K tokens, so it can work across bigger codebases, contracts, or archives in one pass.
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GPT-5.2 Codex has been superseded by GPT-5.3 Codex - for new builds, consider the newer model first.
Strengths side by side
Where each model shines, according to benchmarks and provider positioning.
GPT-5.2 Codex
1. Optimized for Long-Horizon Coding Tasks
- OpenAI describes GPT-5.2 Codex as a highly intelligent coding model built for long-horizon, agentic coding work.
- Well suited to planning, refactoring, debugging, and multi-step implementation flows inside real codebases.
2. Adjustable Reasoning for Coding Work
- Supports configurable reasoning effort from low to xhigh depending on speed and quality needs.
- Accepts both text and image inputs while producing text output.
3. Large Context + Long Output
- 400 k token context window supports broad repository understanding and larger working sets.
- Allows up to 128 k output tokens for longer patches, code generation, and technical explanations.
4. Up-to-Date Model Snapshot
- Knowledge cut-off of Aug 31 2025 keeps it current with newer tools and frameworks.
- Supports streaming, function calling, and structured outputs for tool-driven coding workflows.
Gemini 1.0 Pro
1. Strong all-purpose performance
- Designed as Google's balanced middle-tier model.
- Handles a wide range of tasks: reasoning, writing, coding, and problem-solving.
2. Natively multimodal understanding
- Trained from the ground up on text, images, audio, and video.
- More consistent multimodal reasoning than stitched-together architectures.
3. Great cost-to-capability ratio
- Offers much of Gemini Ultra's reasoning quality at a fraction of the cost.
- Strong default choice for large-scale production workloads.
4. Reliable reasoning and factual performance
- Performs well on benchmarks like MMLU, MMMU, and code reasoning.
- Handles long-form analysis, multi-step reasoning, and structured problem solving.
5. Advanced coding capabilities
- Supports major languages such as Python, Java, C++, Go.
- Generates, edits, debugs, and explains code with high accuracy.
- Powers advanced coding systems like AlphaCode 2.
6. Efficient and scalable
- Optimized for Google TPUs for lower latency and faster inference.
- Suitable for batch workloads, agents, and complex multi-step pipelines.
7. Strong multimodal reasoning
- Understands math, physics, and scientific diagrams.
- Handles mixed data inputs (charts + text, screenshots + instructions, etc.).
8. Enterprise-ready reliability
- Available through Google AI Studio and Vertex AI.
- Benefits from enterprise-grade governance, safety, privacy, and compliance.
Use GPT-5.2 Codex or Gemini 1.0 Pro - or both
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-5.2 Codex or Gemini 1.0 Pro - connected to your real data and ready for your whole team. No code, no deployment.
Describe it, and it's built
Tell the Appaca agent the internal tool you need and it builds a working app powered by GPT-5.2 Codex or Gemini 1.0 Pro. No code, no API keys, no deployment.
Switch models without rebuilding
Start on GPT-5.2 Codex, test the same tool on Gemini 1.0 Pro, and keep whichever performs better - the rest of your app stays exactly as it is.
Automated for the whole team
Schedule tools to run on autopilot - daily digests, weekly reports, real-time triggers - and share them with your whole team from one workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-5.2 Codex or Gemini 1.0 Pro - connected to the tools you already use.
Related comparisons
See how GPT-5.2 Codex and Gemini 1.0 Pro stack up against other models in the directory.
FAQs
Gemini 1.0 Pro is generally cheaper: $0.5 input / $1.5 output per million tokens, versus $1.75 / $14 for GPT-5.2 Codex. Actual cost depends on how many tokens your workload reads and writes.
GPT-5.2 Codex has the larger context window at 400K tokens, compared to 128K tokens for Gemini 1.0 Pro. A larger window means the model can consider more text at once - useful for long contracts, codebases, or months of records.
It depends on the job. Compare the pricing, context window, and strengths above against your workload - and remember the choice isn't permanent. In Appaca you can build a tool on GPT-5.2 Codex, test the same tool on Gemini 1.0 Pro, and switch at any time without rebuilding anything.
Yes. Appaca is a no-code AI workspace: describe the internal tool your team needs and the Appaca agent builds it as a working app powered by GPT-5.2 Codex, Gemini 1.0 Pro, or any other model in the directory - with a built-in database, team access, and integrations. No API keys to wire up and nothing to deploy.
Build AI tools with GPT-5.2 Codex or Gemini 1.0 Pro
Describe the tool your team needs and get a working app powered by the model you choose - with a built-in database, team access, and integrations. No code, no deployment.