GPT-5.1
openai/gpt-5.1- OpenAI
- Family · GPT-5
- Released 13 Nov 2025
- Image · Text · File → Text
- Reasoning · adjustable
- Tools · JSON · Vision
Not on OSMEXO yet
Spec & list price
Context391K
Max output128K
Input / 1M$1.25
Output / 1M$10.008× input
Scores · standing
Intelligence24.7#100/489
Coding49.4#68/196
Usage
Tokens / day2.8B▼ 7.7% 7d
Usage rank#144
Requests / day247.9K
Tool calls / req0.06
Per request · 30 days
Avg input5.6K0.4× median
Avg output2120.3× median
Cache hit68%about median
Reasoning share26%0.5× median
Tool-call failures2%about median
Consumption
Peak 5.8B 23 OctLow 1.7B 31 OctRank today #144
News & trends
83 mentions this week ▲ 57%GPT-5 family · videos, posts, articles · 30 days
Trending · 14 days · GPT-5 family
- GPT-5.6 Sol can beat Factorio on peaceful mode175 points
- The Current Models: GPT-5.5 & GPT-5.6 (Sol, Terra, Luna) | ChatGPT 2026 (Ep. 4)7.8K views
- @ArtificialAnlys on X43.1K views
- OpenAI researcher defects to Anthropic after shipping GPT-51 upvotes
- [OC] I checked 163M Reddit posts and comments. Em dashes took off after GPT-4o, then fell 17% the month GPT-5 came out403 upvotes
- Codex 逆袭：从失败到 ChatGPT 底座 | OpenAI | ChatGPT | GPT-5 | Claude Code | o1 | 思维链 | 创新者的窘境 | Sam Altman28.1K views
News · latest from OpenAI
- Chinese labs now target OpenAI's GPT-6 Astra for distillationfork.zone · 1 Nov
- GPT-6.1 Terrasimonwillison.net · 31 Oct
- GPT-5.6 Sol can beat Factorio on peaceful moderyanmadden.net · 31 Oct
- Post-training 4B model with RL to fly Tesla Roadster 21% better than GPT-6 Astraskypilot.ai · 30 Oct
Benchmarks
bar = share of the top score · Benchmark data: Artificial AnalysisSpeed · median across 3 providers, latest day
Output speed#145/33374 tok/s1.1× faster than median
Fastest provider135 tok/sbest of 3 providers
First token#1941.29 s1.3× longer than median
#28 cheapest of 31 with a similar score
Value
Intelligence Index
Blended price per 1M tokens (log)
Family progress
Intelligence Index
- Family releases38.4
Technical details
- Reasoning
- on · medium
- Tokenizer
- GPT
- Moderation
- moderated
Reasoning effort
- high
- medium · default
- low
- none
Request parameters 11
- tools
- tool_choice
- response_format
- structured_outputs
- reasoning
- reasoning_effort
- include_reasoning
- max_tokens
- max_completion_tokens
- seed
+1 more
- verbosity
When to use
Best for
- Math and coding with adjustable reasoning
- Long document analysis
- Image and file understanding
- General assistants needing a no-reasoning mode
- Offline bulk jobs via the batch variant
Think twice for
- Newest frontier agent tasks
- Self-hosting (closed weights)
- Low-cost high-volume chat
Research papers
- Same Simulation, Different Evidence: Where Retrieved Tool Output Costs LLM Agents Accuracy19 Oct
- Knowing Is Not Telling: Identity Ossification in LLM Representations of Trans-border Communities8 Oct
- Large Language Models for Programming: Actually Fixing or Reimplementing Incorrect Code?24 Sep
- Reasoning Topology Matters: A Controlled Study of LLM-Based Cybersecurity Analysis21 Sep
- Before You Poll with LLMs: A Deliberative Diagnostic Framework14 Sep
- ESTS at WMT26: Routing-Informed Expert Pruning for Model Compression11 Sep
- An Empirical Evaluation of Using Large Language Models for Automated Model-Based Test Generation27 Aug
- Consensus-gated Multi-Agent Neural Architecture Search for Seismic Fault Segmentation14 Aug
Social
Most watched and discussed · 90 days
- Cool Posters + GPT 5.1 = Insane WebsitesAkshay Raveendran · 47 views · 27 Oct
- Korean AI tutor beats GPT-5.1 on speaking: 93.8%AI Next Day · 31 views · 29 Oct
Same family
GPT-5- 23.0
- 38.4
- 39.0
- 30.4
Alternatives
other vendors · similar capability- 26.3
- T25.0
- 29.7
- 27.0
Want GPT-5.1 on OSMEXO?
Sign in to request it. Requests are reviewed; a request does not guarantee availability.