Model Tracker

Gemini 1.5 Pro

Gemini 1.5 Pro is an AI model made by Google. Google released it on 15 February 2024. It is retired. Its context window is 2,097,152 tokens.

Google

Gemini 1.5 Pro is an AI model made by Google. Google released it on 15 February 2024. It is retired. Its context window is 2,097,152 tokens. Its longest answer is 8,192 tokens. Through the API it costs $0.000313 per 1K count for input and $0.00125 per 1K count for output.

Released: 15 February 2024 — blog.google, read 16 October 2026
Status: Retired — ai.google.dev, read 16 October 2026
Retired: Not confirmed: two readings disagree: 2025-09-29 and 2025-09-24
Takes: Not confirmed: two readings disagree: text, image, audio, video and text, image, audio, video, code
Returns: Text — ai.google.dev, read 16 October 2026
Open weights: Not confirmed: The maker’s pages reviewed do not state whether Gemini 1.5 Pro weights are open or downloadable, so this cannot be confirmed.
Licence: Not confirmed: The maker’s pages reviewed do not name a licence for Gemini 1.5 Pro.
Context window: 2,097,152 tokens — ai.google.dev, read 16 October 2026
Longest answer: 8,192 tokens — ai.google.dev, read 16 October 2026
Knowledge cutoff: Not confirmed: The maker’s pages reviewed do not print a knowledge-cutoff date for Gemini 1.5 Pro.
API price, input: $0.000313 per 1,000 count (Text Input; price tier for prompts with ≤128K input tokens) — cloud.google.com, read 16 October 2026
API price, output: $0.00125 per 1,000 count (Text Output; price tier for prompts with ≤128K input tokens) — cloud.google.com, read 16 October 2026
Where: Not confirmed: two readings disagree: api, app, cloud and api
Parameters: Not confirmed: The maker’s pages reviewed do not publish a parameter count for Gemini 1.5 Pro.
Model card: Not confirmed: I did not find a maker-published model card or system card for Gemini 1.5 Pro in the pages reviewed.

Benchmarks

Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.

Epoch AI

Epoch Capabilities Index, Gemini 1.5 Pro (Sept 2024): 131.7 (127.1–133.1), as of 19 October 2026
Epoch Capabilities Index, Gemini 1.5 Pro (May 2024): 126.9 (121.6–129.3), as of 19 October 2026
GPQA Diamond, gemini-1.5-pro-002: 57.2% (± 2.8), run 27 January 2025
GPQA Diamond, gemini-1.5-pro-001: 45.9% (± 2.6), run 27 January 2025
OTIS Mock AIME 2024–2025, gemini-1.5-pro-002: 23.1% (± 5.2), run 25 February 2025
OTIS Mock AIME 2024–2025, gemini-1.5-pro-001: 6.8% (± 1.9), run 25 February 2025

Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0

Questions

When was Gemini 1.5 Pro released?

Google released Gemini 1.5 Pro on 15 February 2024.

What is the context window of Gemini 1.5 Pro?

The context window of Gemini 1.5 Pro is 2,097,152 tokens, as Google prints it.

How much does the Gemini 1.5 Pro API cost?

On the standard tier, Gemini 1.5 Pro costs $0.000313 per 1K count for input and $0.00125 per 1K count for output, as Google lists it.

Sources

Release notes | Gemini API | Google AI for Developers (read 16 October 2026)
Models | Gemini API | Google AI for Developers (read 16 October 2026)
Gemini 1.5 Pro Now Available in 180+ Countries; with Native Audio Understanding, System Instructions, JSON Mode and more (read 16 October 2026)
Gemini breaks new ground with a faster model, longer context, AI agents and more (read 16 October 2026)
Agent Platform Pricing | Google Cloud (read 16 October 2026)
Introducing Gemini 1.5, Google's next-generation AI model (read 16 October 2026)

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