GPT-4 Turbo
Shutting down. GPT-4 Turbo shuts down on the OpenAI API on Oct 23, 2026. OpenAI names GPT-5.6 Sol as the replacement.
9 days- Next shutdown
- 9 daysOct 23, 2026 · OpenAI API
- Arena Text
- 1,325#105 of 128 · Arena
- GPQA Diamond
- 46.6%#95 of 108 · Epoch AI
- List price · $ per 1M
- $10.00 in $30.00 outOpenAI API
- Context window
- 128KMax output 4.1K tokens
Dates on every platform
1 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| OpenAI APIOpenAI: Deprecations (opens in a new tab) · checked Oct 14, 2026 | gpt-4-turboDeprecated · also gpt-4-turbo-2024-04-09, gpt-4-turbo-completions | 9 days | GPT-5.6 Sol |
What breaks when you move off GPT-4 Turbo
- Parameters
- Defaults
- Pricing
Intelligence
Third-party results, credited below
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,325 ± 2 | #105 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 46.6% ± 2.7% | #95 of 108 | Feb 27, 2025 |
| FrontierMath Tiers 1-3 | Epoch AI | 0.7% ± 0.5% | #68 of 71 | Aug 27, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 6.7% ± 2.4% | #95 of 105 | Feb 27, 2025 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
OpenAI APIgpt-4-turbo | $10.00 | – | $30.00 | Oct 14, 2026Current · Listed as gpt-4-turbo-2024-04-09 on the pricing page. | OpenAI: Pricing (opens in a new tab) |
Change history
ShutdownLegacy GPT and o-series snapshots shut down on the OpenAI APIOpenAI API3 breaks
Requests to gpt-3.5-turbo-0125, gpt-4-0613, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, o1, o1-pro, o3-mini and o4-mini, and their aliases, fail after the shutdown date. OpenAI names GPT-5.6 Sol, Terra or Luna as the substitute for each. Fine-tuned gpt-3.5-turbo, gpt-4, gpt-4.1-nano and o4-mini models shut down the same day.
- Platform
- OpenAI API
- Models
- GPT-3.5 Turbo, GPT-4, GPT-4 Turbo, GPT-4.1 nano, GPT-4o, o1, o1-pro, o3-mini, o4-mini
- Announced
- ParametersPro snapshots move to gpt-5.6-sol with reasoning.mode set to pro. There is no separate Pro model ID for GPT-5.6.
- DefaultsGPT-5.6 models reuse reasoning across turns by default (reasoning.context all_turns); earlier models default to current_turn.
- PricingGPT-5.6 bills cache writes at 1.25 times the uncached input rate. Replace prompt_cache_retention with prompt_cache_options.ttl.
Source: OpenAI, Deprecations (opens in a new tab); OpenAI, Using GPT-5.6 (opens in a new tab)