GPT-4 Turbo

GPT-4 Turbo

Quick answer: GPT-4 Turbo (API: gpt-4-turbo-2024-04-09) is OpenAI's April 2024 flagship — the last major GPT-4 release before GPT-4o. It scores 97.0% on GSM8K, 86.4% on MMLU, 9.32/10 on MT-Bench, and 28.7% on LiveCodeBench. With a 128K context window at $10/$30 per 1M tokens, it was state-of-the-art at launch but has since been superseded by GPT-4o and GPT-5.x.

At a Glance

Where GPT-4 Turbo leads

• 97.0% GSM8K — top-tier grade-school math
• 86.4% MMLU — strong academic knowledge
• 9.32/10 MT-Bench — excellent instruction following
• 50.0% AlpacaEval 2 — strong open-ended generation quality
• 72.6% MATH — competitive competition mathematics
• Stable, well-tested API for existing integrations

Where it lags

• Superseded by GPT-4o, GPT-4.1, and GPT-5.x across all benchmarks
• 28.7% LiveCodeBench — well below current frontier models
• $10/$30 per 1M tokens — expensive relative to far superior current alternatives
• 128K context window vs 1M for GPT-4.1 and Gemini 2.5 Pro
• Knowledge cutoff December 2023

Best for: Legacy production integrations validated on gpt-4-turbo-2024-04-09; tasks where the specific model version is contractually or compliance-required.

What GPT-4 Turbo Is

GPT-4 Turbo (gpt-4-turbo-2024-04-09) was OpenAI's highest-capability model from November 2023 through May 2024, when GPT-4o was released. It introduced a 128K context window (4× the 32K limit of GPT-4), vision support, and improved instruction following over the original GPT-4.

The April 2024 version (gpt-4-turbo-2024-04-09) was notable for achieving near-human performance on MT-Bench (9.32/10) and was widely used as a baseline for LLM evaluation. Its MMLU score of 86.4% and GSM8K score of 97.0% were considered frontier results at launch.

For teams still using GPT-4 Turbo, migration to GPT-4o or GPT-4.1 is strongly recommended: both offer better performance at substantially lower cost. GPT-4.1 specifically provides a 1M context window, better benchmark scores, and costs $2/$8 vs GPT-4 Turbo's $10/$30 per 1M tokens.

Specifications

Pricing

Pricing per OpenAI pricing page. Note: GPT-4.1 provides better performance at $2/$8 per 1M.

Context Window

GPT-4 Turbo has a 128,000-token context window — roughly 90 pages of text in a single request. This is sufficient for most document tasks but is significantly smaller than GPT-4.1 (1M tokens) or Gemini 2.5 Pro (1M tokens).

Public Benchmark Scores

GPT-4 Turbo vs Alternatives

GPT-4 Turbo is uniformly worse value than its successors: GPT-4.1 offers 5× more context and better scores at 5× lower cost. For any new deployment, GPT-4.1 or GPT-4o is the recommended replacement.

Use GPT-4 Turbo via API

from openai import OpenAI

client = OpenAI(api_key="YOUR_API_KEY")

response = client.chat.completions.create(
    model="gpt-4-turbo-2024-04-09",
    messages=[{"role": "user", "content": "Summarise this research paper..."}],
)
print(response.choices[0].message.content)

Related Models & Benchmarks

• Compare: GPT-4o · GPT-4.1 · o4-mini
• Benchmarks: GSM8K · MMLU · MT-Bench · LiveCodeBench

Frequently Asked Questions

Specs and scores sourced from OpenAI's official GPT-4 Turbo announcement (April 2024) and Benchgen evaluations. Pricing cited to the OpenAI pricing page. Last updated 2026-07-24.