o3
o3Alternatives?
CheaperGemini 3.8 Flashunstated+43%-57%*$0.75 / $3.75Sampling parameters are ignored+1BetterGPT-6.1 Solmax+41%+14%$0.72Remove unsupported parameters+5
OpenDeepSeek V4 Pro 0813maxsame-43%$0.67No image input+5CheaperGemini 3 Flash Previewhigh+28%-68%$0.50 / $3CheaperGemini 3.6 Flashhigh+27%-57%*$1.60Gemini 3.8 Flashunstated+43%-57%*$0.75 / $3.75Sampling parameters are ignored+1Gemini 3 Flash Previewhigh+28%-68%$0.50 / $3Gemini 3.6 Flashhigh+27%-57%*$1.60
Muse Spark 1.2xhigh+15%-43%$0.97Only auto tool_choice is supported+1
Grok 4.7unstated+14%-14%$2 / $6Reasoning cannot be disabled+4GPT-6.1 Solmax+41%+14%$0.72Remove unsupported parameters+5Muse Spark 1.2xhigh+15%-43%$0.97Only auto tool_choice is supported+1GPT-6 Solmax+16%+14%$1.04Gemini 3.8 Flashhigh+33%-57%*$1.24Sampling parameters are ignored+1Gemini 3.6 Flashhigh+27%-57%*$1.60DeepSeek V4 Pro 0813maxOpensame-43%$0.67No image input+5
Kimi K3maxOpen-3%+71%$2.00Sampling parameters are fixed+3
GLM 5.3maxOpen-22%-39%$2.01No image input+4
Qwen3 235B A22B Thinking 2507unstatedOpen-23%-79%$0.23 / $2.30No image input+1TInklingxhighOpen-23%-51%$0.95 / $4.05No strict JSONGPT-6 Astraunstated+45%—$10 / $50Monitoring can return HTTP 403+2GPT-6.1 Solmax+41%—$0.72Remove unsupported parameters+5GPT-5.6 Solmax+33%—$1.99GPT-6 Solunstated+23%—$2 / $10GPT-5.5xhigh+20%—$2.63Prompts with >272K input tokensGPT-5 (2025-08-07)high-4%—$1.25 / $10o3 (2025-04-16)high-6%—$2 / $8GPT-5.1 (2025-11-13)high-8%—$1.25 / $10All OpenAI models →Benchmarks
in Chat & KnowledgeFAQ
How much does o3 cost?›
$2 per 1M input tokens and $8 per 1M output tokens; cached input $0.50 per 1M.
Is o3 free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is o3, and what is it best at?›
#123 of 334 in Chat & Knowledge, #38 of 239 in Coding, #76 of 242 in Agents & Tool Use, #81 of 195 in Writing & Language, #68 of 124 in Vision & Documents. Strongest at: Instructions.
Is o3 better than Grok 4.6?›
On SimpleQA Verified v1, o3 scores 52.3 vs 52.9 — about the same.
How can I use o3?›
Through the API of OpenAI.
What is the context window of o3?›
200K tokens, with up to 100K output tokens.
When was o3 released? Is there a newer version?›
Released 2025-04-16. It is the current version in its line.
Is o3 open source?›
No, o3 is a closed model available through an API. The closest open-weights option here is DeepSeek V4 Pro 0813.
Can o3 read images?›
It accepts text and images, PDF files as input.
What is o3?›
o3 is a closed language model from OpenAI, released Apr 2025, the successor to o1.
What are the best alternatives to o3?›
Gemini 3.8 Flash (cheaper), GPT-6.1 Sol (better), DeepSeek V4 Pro 0813 (open weights).