GPT-5.4
OpenAI
$2.5/$15 per 1M tokens- Strong coding performance
- Excellent tool integration
- Strong agentic capabilities
Model comparison
GPT vs Gemini for Developers
GPT is the stronger default for coding agents and tool-heavy workflows. Gemini is compelling for long-context analysis and cost-sensitive multimodal work.
GPT-5.6 Terra
OpenAI
$4/$18 per 1M tokens- GPT-5.6 balance of intelligence and cost
- Programmatic tool calling and persisted reasoning
- 128K max output
Head-to-head scorecard
| Dimension | GPT-5.4 | GPT-5.6 Terra | Practical read |
|---|---|---|---|
| Coding | 9.8 | 9.6 | Use this row as a directional signal, then test on your own eval set. |
| Reasoning | 9.5 | 9.6 | Use this row as a directional signal, then test on your own eval set. |
| Tool use | 9.7 | 9.7 | Tie or depends on workload. |
| Input cost / 1M | $2.5 | $4 | Use this row as a directional signal, then test on your own eval set. |
| Output cost / 1M | $15 | $18 | Use this row as a directional signal, then test on your own eval set. |
| Context window | 1M | 1.05M | Use this row as a directional signal, then test on your own eval set. |
Which should you pick?
- Pick GPT-5.4 when you need Coding or Agents.
- Pick GPT-5.6 Terra when you need Production agents or Coding.
- Run your own 10-task eval before standardizing. Public leaderboards are useful filters, not final answers.