GPT-5 Pro
Oct 2025
GPT-5 ProCompare inon
GPT-5 Pro measured on 6 of 104 Chat & Knowledge benchmarks6
BenchmarkByScoreRank
Reasoning4
Math2Leads on 1
No benchmark matches
Alternatives?
ModelScoreCostPer taskWhat changes
CheaperClaude Fable 5.1xhigh×7.4-52%$5.98Replace forced tool_choice+5BetterGPT-6 Lunamedium+44%-100%$0.017Function calling only with none · Chat Completions+3
OpenGLM 5.3 Flashmax×5-99%$0.28Defaults to max · Self-hosted+4CheaperClaude Opus 5.5max×7.3-81%$5.98No forced tool use+5CheaperGPT-6 Astrahigh×7.3-52%$1.73Monitoring can return HTTP 403+2ModelScoreCostPer taskWhat changes
Claude Fable 5.1xhigh×7.4-52%$5.98Replace forced tool_choice+5Claude Opus 5.5max×7.3-81%$5.98No forced tool use+5GPT-6 Astrahigh×7.3-52%$1.73Monitoring can return HTTP 403+2
Gemini 4 Argonhigh×7.3-90%*$1.99Synchronous output stops at 65,536+2GPT-6.1 Solmax×7.3-90%$0.72Remove unsupported parameters+5ModelScoreCostPer taskWhat changes
GPT-6 Lunamedium+44%-100%$0.017Function calling only with none · Chat Completions+3GPT-5.6 Lunahigh×2.3-99%$0.044Claude Haiku 5.5high×3.1-100%$0.079Remove sampling parameters+5GPT-6.1 Sollow×5.8-90%$0.13Remove unsupported parameters+5GPT-6 Sollow+92%-90%$0.13ModelScoreCostPer taskWhat changes
GLM 5.3 FlashmaxOpen×5-99%$0.28Defaults to max · Self-hosted+4
DeepSeek V4 Pro 0813highOpen×4.8-95%$1.32 / $3.96No image input+5
Kimi K3maxOpen×4.6-85%$2.00Sampling parameters are fixed+3TInkling SmallxhighOpen×2.9-98%$0.45 / $1.20Context: 400K → 256K+1
Qwen3.8 27BxhighOpen×2.9-98%$1.01Context: 400K → 262K+5ModelScoreCostPer taskWhat changes
GPT-6 Astramedium×7.3—$1.54Monitoring can return HTTP 403+2GPT-5.4 Proxhigh×6.9—$30 / $180No strict JSONGPT-6.1 Solmedium×6.8—$0.21Remove unsupported parameters+5GPT-5.5 Prohigh×6.8—$30 / $180GPT-5.4xhigh×6.3—$2.50 / $15GPT-5.6 Solmedium×5.3—$0.50GPT-5.5medium×5.3—$0.90Prompts with >272K input tokensGPT-6 Solmedium×3.7—$0.25All OpenAI models →History
6 versionsFAQ
How much does GPT-5 Pro cost?›
$15 per 1M input tokens and $120 per 1M output tokens.
Is GPT-5 Pro free to use?›
There is no free API; the cheapest paid price is $15 per 1M input tokens.
How good is GPT-5 Pro, and what is it best at?›
#41 of 66 in Chat & Knowledge.
Is GPT-5 Pro better than Claude Sonnet 4.5?›
On ARC-AGI-2 · public evaluation, GPT-5 Pro scores 13.3 vs 14.7 — lower.
How can I use GPT-5 Pro?›
Through the API of OpenAI.
What is the context window of GPT-5 Pro?›
400K tokens, with up to 128K output tokens.
When was GPT-5 Pro released? Is there a newer version?›
Released 2025-10-06. It is the current version in its line.
Is GPT-5 Pro open source?›
No, GPT-5 Pro is a closed model available through an API. The closest open-weights option here is GLM 5.3 Flash.
Can GPT-5 Pro read images?›
It accepts text and images, PDF files as input.
What is GPT-5 Pro?›
GPT-5 Pro is a closed language model from OpenAI, released Oct 2025.
What are the best alternatives to GPT-5 Pro?›
Claude Fable 5.1 (cheaper), GPT-6 Luna (better), GLM 5.3 Flash (open weights).