Deprecated — shuts down Oct 23, 2026.
Still purchasable until then, but the provider has
announced end-of-life. Don't start new work on it. Full deprecation status & replacements →
Availability: Migration target: gpt-5.6-terra.
Today's price · per 1M tokens
Input
$1.10
per 1M tokens
Output
$4.40
per 1M tokens
Blended
$1.93
blended $/1M — 3:1 weighted input:output
Cached input
$0.275
25% of input — prompt caching
Source: official OpenAI pricing · read Jul 4, 2026
MODELPRICEWATCH.COM · 2026-08-09
Overview
Reasoning model with extended thinking. Cost-effective for complex problem solving.
Capabilities
struck through = not supportedInput 2/5
Text ✓
Image ✓
Audio
Video
PDF
Output 1/5
Text ✓
Image
Audio
Video
Embedding
Features 4/9
Prompt caching ✓
Reasoning ✓
Coding
Fast inference
Long context ✓
Open weights
Multimodal ✓
Web search
Realtime
Benchmark performance
accuracy % · higher is betterAvg benchmark score69.2%
Perf per $/Mtok35.9
GPQA Diamond
81.4%
SWE-Bench Verified
68%
Humanity's Last Exam
14.28%
ARC-AGI 2
40%
AIME 2025
92.7%
MMMLU
86%
BFCL
82%
HumanEval
68.1%
MATH 500
90%
Independent composite scores
- LMSYS Chatbot Arena: 1390 ELO (Human preference)
How it stacks up
- Ranks #35 of 67 benchmarked models by average score
- Ranks #44 of 150 comparably-measured models by percentile score, across 10 independent measurements
- Ranks #85 of 150 comparably-tested models by normalized performance per dollar
- Strongest at BFCL — 82%, #2 of 23
135 tokens/sec output 35.3s latency to first token (TTFT)
Source: Vellum LLM Leaderboard · updated Aug 9, 2026 · See full rankings →
Specifications
- Provider
- OpenAI
- Context window
- 200K tokens
- Modality
- text, image
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Apr 17, 2025
- Status
- Deprecated ends Oct 23, 2026
- Last updated
- Jul 4, 2026
- Tags
Availability verified: Jul 25, 2026 — per OpenAI's own deprecation notice