Inference
EN
OpenAI

GPT-5 (medium)

GPT-5 (medium) is a reasoning model from OpenAI in the GPT-5 family. 8 benchmarks count toward its index, in 5 categories.

  • Closed weights
  • Reasoning
  • Input: text · image · file
  • Released 2025-08
  • Retires 11 Dec 2026
RankedEnough results for an index.
IndexAll categories, out of 100.53.0±9.2Median 51.0
CoverageIndex weight that has results.65%
SpeedOutput tokens per second.76/sMedian 67/s
First tokenSeconds to the first output token.4.6 sMedian 1.3 s
Input / 1MUS dollars per 1M input tokens.$1.25Median $0.60
Output / 1MUS dollars per 1M output tokens.$10.00Median $2.55
ContextMaximum tokens in one request.400KMedian 262K
EloLMArena rating and rank.—Median 1422

Details

From OpenRouter
API IDThe model ID on OpenRouter.
openai/gpt-5
Max outputMaximum output tokens per request.
128K
Knowledge cutoffLast date of training data.
30 Sep 2024
ToolsTool calls on OpenRouter.
Yes
JSON outputOutput follows a given JSON schema.
Yes
Cache read / 1MUS dollars per 1M cached tokens.
$0.125
WeightsLink to the published weights.
—
RetiresDate OpenRouter removes the model.
11 Dec 2026

Capabilities

Index per category, out of 100.
Out of 100
AgenticMulti-step tasks with tools.1 counted60.2—
CodingCode writing and repair.None counted——
ReasoningLogic problems and puzzles.2 counted48.1131 / 227
MultimodalTasks with images and text.1 counted51.8—
KnowledgeFacts and expert knowledge.3 counted54.996 / 268
MultilingualTasks in many languages.None counted——
InstructionTasks with strict prompt rules.1 counted55.0—
MathMath problems.None counted——

Results

8 counted
BenchmarkThe benchmark name.ResultThe score from the source.PlacePlace among results on this benchmark.
Artificial Analysis IFBenchInstruction70.6%41 / 146
Artificial Analysis Omniscience AccuracyKnowledge39.5%55 / 164
τ²-Bench Tool-Agent-User EvaluationAgentic86.5%50 / 149
Artificial Analysis Long Context ReasoningReasoning76.0%88 / 217
Artificial Analysis GPQA DiamondKnowledge84.2%83 / 199
Artificial Analysis Humanity's Last ExamKnowledge25.4%98 / 222
Artificial Analysis MMMU-ProMultimodal74.3%58 / 113
Critical Physics TasksReasoning0.0%150 / 214

Sources

BenchLMCC BY-NC 4.0OpenRouterTerms restrict reuse

History

5 releases
Index53.6 → 53.0
23 Oct 202612 Nov 2026
Output / 1M$10.00 → $10.00
23 Oct 202612 Nov 2026

Questions

How much does GPT-5 (medium) cost?
$1.25 per 1M input tokens, $10.00 per 1M output tokens.
How good is GPT-5 (medium)?
Its index is 53.0 out of 100. That is place 117 of 283 ranked models.
What is GPT-5 (medium) best at?
Knowledge: 54.9 out of 100, place 96 of 268.
How fast is GPT-5 (medium)?
76 output tokens per second, 4.6 s to the first token.
What is the context window of GPT-5 (medium)?
400K tokens.
Is GPT-5 (medium) open source?
No. Its weights are not published.
When was GPT-5 (medium) released?
August 2025.

Badge

GPT-5 (medium) on Inference360: place 117 of 283, index 53.0
HTML
<a href="https://inference360.ai/models/gpt-5-medium"><img src="https://inference360.ai/badges/gpt-5-medium.svg" alt="GPT-5 (medium) on Inference360: place 117 of 283, index 53.0" height="20"></a>
Markdown
[![GPT-5 (medium) on Inference360: place 117 of 283, index 53.0](https://inference360.ai/badges/gpt-5-medium.svg)](https://inference360.ai/models/gpt-5-medium)

Compare with

Muse Glimmer 30B53.0Kimi K2.5 (Reasoning)53.0GPT-5.1-Codex52.9GPT-5 (high)53.6

Lower price

dots3-note Preview63.4 · FreeApodex 1.1 Mini55.7 · FreeNemotron 3 Ultra50.8 · Free

More from OpenAI

All models
GPT-5 (high)53.6GPT-5 mini48.4GPT-5 nano41.9GPT-555.0GPT-OSS 120B43.4