As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/gemini-2-5-pro/

# Gemini 2.5 Pro

Google DeepMind, Gemini 2.5 family. Status: legacy. Type: reasoning model. Released: 2025-06-17. Training cutoff: 2025-01.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Gemini API | `gemini-2.5-pro` | https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-pro:generateContent | https://ai.google.dev/gemini-api/docs/models/gemini-2.5-pro |
| Google Cloud Gemini Enterprise Agent Platform (Vertex AI) | `gemini-2.5-pro` |  | https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/gemini/2-5-pro |
| OpenRouter | `google/gemini-2.5-pro` |  |  |

## Pricing

- Input: $1.25 per 1M tokens
- Output: $10 per 1M tokens
- Unit as published: per 1M tokens (Standard, prompts <=200k; >200k: $2.50 in / $15.00 out)
- Source: https://ai.google.dev/gemini-api/docs/pricing
- Last checked: 2026-09-29

## Specs

- Input: text, image, audio, video, pdf
- Output: text
- Context window: 1,048,576 tokens
- Max output: 65,536 tokens
- Open weights: no
- Licence: proprietary

## What it has not seen

- Published training cutoff: 2025-01 (January 2025).
- AI events after it on Post-Cutoff: 2,037 (476 major, 90 historic), as of 2026-11-13.
- Already missing at launch: 19.
- Briefings of the news since January 2025: https://postcutoff.com/briefings/cutoff-2025-01-s.md (short), https://postcutoff.com/briefings/cutoff-2025-01-m.md (medium), https://postcutoff.com/briefings/cutoff-2025-01.md (full).
- Its card, with five things it has never heard of: https://postcutoff.com/you/gemini-2-5-pro/

## What stands out

- Thinking model with 1M context: Built-in thinking plus 1,048,576-token multimodal input and 65K output; Search/Maps grounding, code execution, URL context. Source: https://ai.google.dev/gemini-api/docs/models/gemini-2.5-pro
- Debuted: First Gemini 2.5 'thinking model'; the March 2025 experimental release topped LMArena by a significant margin and led coding/math/science benchmarks. Source: https://blog.google/innovation-and-ai/models-and-research/google-deepmind/gemini-model-thinking-updates-march-2025/
- Coding-agent backbone (found after launch): Steepest demand growth of any Google model; powered tools such as Cursor and GitHub Copilot at GA. Source: https://developers.googleblog.com/en/gemini-2-5-thinking-model-updates/

## Notes

First released as experimental 2025-03; GA 2025-06-17 (stable id; earlier preview ids e.g. gemini-2.5-pro-preview-*). No shutdown date, but Gemini API access is limited to projects that used it before; Google recommends 3.5 Flash-Lite or 3.8 Flash for new projects.

Former flagship reasoning model (2025). Keep only for existing workloads.

```bash
curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-pro:generateContent" \
  -H "x-goog-api-key: $GEMINI_API_KEY" -H "Content-Type: application/json" \
  -d '{"contents":[{"parts":[{"text":"Hello"}]}]}'
```

Sources: [model page](https://ai.google.dev/gemini-api/docs/models/gemini-2.5-pro), [pricing](https://ai.google.dev/gemini-api/docs/pricing), [deprecations](https://ai.google.dev/gemini-api/docs/deprecations).

Model page: https://postcutoff.com/m/gemini-2-5-pro/