# GPT-5

> OpenAI's flagship reasoning model: 400K context, native tool calling and schema-guaranteed structured output. A frontier agentic workhorse.

_The Frontier Model Matrix · /models/gpt-5 · [JSON](/api/models/gpt-5) · [all The Frontier Model Matrix](/models)_

- **name:** GPT-5
- **vendor:** OpenAI
- **model_id:** gpt-5
- **context_window:** 400K
- **max_output:** 128K
- **input_per_mtok:** $1.25
- **output_per_mtok:** $10.00
- **strengths:** OpenAI's flagship reasoning model: 400K context, native tool calling and schema-guaranteed structured output. A frontier agentic workhorse.
- **provider:** OpenAI
- **family:** GPT-5
- **release_date:** 2025-08-07 (source: https://models.dev/models/openai/gpt-5/)
- **last_updated:** 2026-06-15
- **open_weights:** false (source: https://openai.com/policies/services-agreement/)
- **license:** proprietary (source: https://openai.com/policies/services-agreement/)
- **params_total:** — (verify-against-primary-at-build)
- **params_active:** — (verify-against-primary-at-build)
- **tool_call:** true (source: https://models.dev/models/openai/gpt-5/)
- **reasoning:** always (source: https://models.dev/models/openai/gpt-5/)
- **structured_output:** true (source: https://models.dev/models/openai/gpt-5/)
- **attachment:** image (source: https://models.dev/models/openai/gpt-5/)
- **temperature:** false (source: https://models.dev/models/openai/gpt-5/)
- **knowledge_cutoff:** 2024-09 (source: https://models.dev/models/openai/gpt-5/)
- **context_advertised:** 400K (source: https://models.dev/models/openai/gpt-5/)
- **context_effective:** — (verify-against-primary-at-build)
- **price_input:** $1.25 (source: https://models.dev/models/openai/gpt-5/)
- **price_output:** $10.00 (source: https://models.dev/models/openai/gpt-5/)
- **price_cache_read:** — (verify-against-primary-at-build)
- **price_cache_write:** — (verify-against-primary-at-build)
- **cost_per_full_window:** — (verify-against-primary-at-build)
- **cost_per_agent_task:** — (verify-against-primary-at-build)
- **modalities:** text-in,image-in,text-out (source: https://models.dev/models/openai/gpt-5/)
- **gpqa_diamond:** — (verify-against-primary-at-build)
- **swe_bench_verified:** — (verify-against-primary-at-build)
- **terminal_bench:** — (verify-against-primary-at-build)
- **tau2_bench:** — (verify-against-primary-at-build)
- **bfcl_tool_use:** — (verify-against-primary-at-build)
- **aa_index:** — (verify-against-primary-at-build)
- **lmarena_elo:** — (verify-against-primary-at-build)
- **tokens_per_sec:** — (verify-against-primary-at-build)
- **ttft:** — (verify-against-primary-at-build)
- **hallucination_rate:** — (verify-against-primary-at-build)
- **agent_readiness_score:** — (verify-against-primary-at-build)
- **score_confidence:** partial
- **source_url:** https://models.dev/models/openai/gpt-5/
- **source_type:** models.dev
- **last_verified:** 2026-06-15