A reliable mid-tier upgrade over GPT-4o for instruction-heavy tasks, but the context window and output pricing limit its value against Sonnet-class competitors.
82
Coding
80
Writing
76
Research
0
Images
52
Value
45
Long Context
Use this when
Teams and developers who need GPT-4o-level quality with incremental improvements in accuracy and instruction adherence without paying flagship model prices.
Skip this if
You need to process documents or codebases longer than 128K tokens, require native image generation, or are cost-sensitive enough that a sub-$1 input model like GPT-4o Mini would suffice.
Stronger instruction-following than GPT-4o, reducing prompt engineering overhead
Solid coding performance across Python, JavaScript, and SQL at a mid-tier cost
Good balance of response quality and speed for production API integrations
Improved factual accuracy and reduced hallucination rate compared to GPT-4o
Weaknesses
128K context window falls short of Gemini 3.1 Pro's 1M+ and Claude Sonnet 4.6's 200K offerings
No native image generation capability, limiting true multimodal workflows
Output cost of $10/1M tokens is steep relative to Claude Sonnet 4.6 at similar quality tiers
Monthly cost estimate
See what OpenAI: GPT-5.1 Chat actually costs at your usage level
Input tokens / month1M
10k50M
Output tokens / month500k
10k25M
Input cost
$1.25
Output cost
$5.00
Total / month
$6.25
Based on OpenAI: GPT-5.1 Chat API pricing: $1.25/1M input · $10/1M output. Real costs vary by provider discounts and caching. Check the provider for exact current rates.
Price History
OpenAI: GPT-5.1 Chat pricing over time
→0% since Mar 27
2 data points · tracked daily since Mar 27, 2026
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Start using OpenAI: GPT-5.1 Chat
Teams and developers who need GPT-4o-level quality with incremental improvements in accuracy and instruction adherence without paying flagship model prices.. Start free — no card required.
GPT-4 is OpenAI's original flagship large language model, released in March 2023, offering strong reasoning and instruction-following across text tasks. It represents the foundational GPT-4 release before later variants like GPT-4 Turbo or GPT-4o improved speed, cost, and context length.
Verdict
A once-groundbreaking model now badly outclassed by cheaper, faster, and more capable successors — only use it if you have no choice.
Quality score
51%
Pricing
$30.00/1M in
$60.00/1M out
Speed
Balanced
Best for teams or workflows locked into the original gpt-4 api that require reliable, high-quality text reasoning without needing long context or multimodal input.
Context
8k tokens
At $30/$60 per million tokens, this is one of the most expensive text-only models available. The 8,191-token context window is a hard ceiling that makes it unsuitable for most document-processing tasks. OpenAI continues to offer it for API backward compatibility but actively recommends migrating to GPT-4o or GPT-4 Turbo. New projects should not default to this model.
Legacy flagshipText-onlyHigh costOpenAIGPT-4
Best for
Teams or workflows locked into the original GPT-4 API that require reliable, high-quality text reasoning without needing long context or multimodal input.
GPT-4 v0314 is a frozen snapshot of the original GPT-4 release from March 2023, preserved for reproducibility and regression testing. It offers the same core reasoning capabilities as early GPT-4 but lacks all subsequent improvements, fine-tuning updates, and safety refinements.
Verdict
An expensive museum piece: only justified if you need this exact model snapshot for legacy reproducibility.
Quality score
40%
Pricing
$30.00/1M in
$60.00/1M out
Speed
Balanced
Best for reproducible research or legacy workflows that require consistent, version-locked gpt-4 outputs.
Context
8k tokens
This is a frozen March 2023 snapshot of GPT-4, not a current model. OpenAI may deprecate legacy snapshots with limited notice. The 8,191-token context window is a hard constraint. Cost is identical to much more capable current models, making this a poor choice for new projects.
LegacyGPT-4Version-lockedResearchDeprecated
Best for
Reproducible research or legacy workflows that require consistent, version-locked GPT-4 outputs.
Pricing moves, ranking shifts, and capability updates.
New ModelMar 27, 2026
OpenAI: GPT-5.1 Chat — added to UseRightAI
OpenAI: GPT-5.1 Chat (OpenAI) is now indexed. It supersedes GPT-4o. A reliable mid-tier upgrade over GPT-4o for instruction-heavy tasks, but the context window and output pricing limit its value against Sonnet-class competitors.
OpenAI: GPT-5.1 Chat is best for teams and developers who need gpt-4o-level quality with incremental improvements in accuracy and instruction adherence without paying flagship model prices.. It is a strong fit when that workflow matters more than the tradeoffs around balanced pricing and balanced speed.
When should I avoid OpenAI: GPT-5.1 Chat?
You need to process documents or codebases longer than 128K tokens, require native image generation, or are cost-sensitive enough that a sub-$1 input model like GPT-4o Mini would suffice.
What is a cheaper alternative to OpenAI: GPT-5.1 Chat?
Meta: Llama 3.1 8B Instruct is the lower-cost option to compare first when you want a similar workflow fit with less token spend.
What is a faster alternative to OpenAI: GPT-5.1 Chat?
GPT-5.4 is the better pick when response time matters more than maximum depth or premium quality.
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