Migrating from gpt-4.5-preview to gpt-5-2025-08-07

What changes when you move from gpt-4.5-preview to gpt-5-2025-08-07: prices, limits, features and parameters, read from each company's own pages.

From: gpt-4.5-preview
Status: Retired
Shutdown: Jul 14, 2025
Time left: —

To: gpt-5-2025-08-07
Status: Deprecated
Shutdown: Dec 11, 2026
Time left: 57 days

gpt-5-2025-08-07 is itself deprecated, shutting down Dec 11, 2026. Its replacement is gpt-5.6-sol.

Prices

USD per 1M tokens, standard tier

Neither model has published per-token prices.

Limits

Tokens

Limit	gpt-4.5-preview	gpt-5-2025-08-07	Change
Context window	128,000 tokensin place when tracking began (October 6, 2026) · source	Not published	—
Max output tokens	16,384 tokensin place when tracking began (October 6, 2026) · source	Not published	—

Benchmarks

Same benchmark and source on both sides; settings named where they differ

Benchmark	gpt-4.5-preview	gpt-5-2025-08-07	Change
GPQA DiamondEpoch AI, high effort (vs no setting). Other settings not run → 85.4% medium effort not run → 71.7% minimal effort	68.7%	86.2%	+17.5 pts
MATH Level 5Epoch AI, high effort (vs no setting). Other settings not run → 97.9% medium effort	78.6%	98.1%	+19.5 pts
OTIS Mock AIME 2024-2025Epoch AI, high effort (vs no setting). Other settings not run → 87.2% medium effort not run → 46.7% minimal effort	37.8%	91.4%	+53.6 pts

A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Features and parameters

Compare models

No feature is published for both models, so none can be compared.

Not published for gpt-4.5-preview: PDF input, Reasoning / thinking, Built-in web search, temperature parameter, top_p parameter, logprobs.

Not published for gpt-5-2025-08-07: Structured outputs, Function calling, Prompt caching, Batch API, Image input, PDF input, Reasoning / thinking, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs, Context window, Max output tokens.

Free tier

gpt-4.5-preview: no free tier listed

gpt-5-2025-08-07: Free for shared data, 1M tokens a day for Launch and Grow (250K for Build), in place when tracking began (October 12, 2026) (source) · All free models

gpt-5-2025-08-07 adds a free tier.

Aliases

All aliases

No aliases point at gpt-4.5-preview.

Aliases pointing at gpt-5-2025-08-07: gpt-5 (in place when tracking began (October 7, 2026) · source)

On cloud platforms

All platform dates

Model	Platform	Platform ID	Shutdown	Time left
gpt-5-2025-08-07	Microsoft Foundryversion 2025-08-07	gpt-5	Feb 9, 2027Active	117 days

Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.

Checklist

Change the model string from gpt-4.5-preview to gpt-5-2025-08-07.

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: gpt-4.5-preview, gpt-5-2025-08-07.