GPT 5 Codex — Currently unavailable
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Technical specifications
Independent benchmarks
Scores below come from Artificial Analysis, an independent third party. BazaarLink does not participate in the testing.
Intelligence 25
Coding
Math 99
MMLU 87
GPQA 84
This modelCategory leader
Overall intelligence
#124out of 638 models
Aggregated across academic benchmarks
Intelligence
25
Top 19%This model25
Category leader53
Median12
Math
99
—This model99
Category leader99
Median53
MMLU Pro
87%
—This model87%
Category leader90%
Median75%
GPQA
84%
—This model84%
Category leader94%
Median69%
LiveCodeBench
84%
—This model84%
Category leader42%
Median42%
HLE
26%
—This model26%
Category leader53%
Median7%
SciCode
41%
—This model41%
Category leader60%
Median34%
IFBench
74%
—This model74%
Category leader83%
Median44%
τ²-Bench Telecom
87%
—This model87%
Category leader99%
Median46%
AA-LCR
69%
—This model69%
Category leader76%
Median40%
Terminal-Bench Hard
38%
—This model38%
Category leader66%
Median14%
Top 5 — CodingCoding Index leaderboard
2Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
?/claude-fable-5-1-xhigh81$10 / $503Claude Fable 5.1 (Adaptive Reasoning, High Effort, Default Fallback)
?/claude-fable-5-1-high79$10 / $504GPT-5.6 Sol (xhigh)
openai/gpt-5-6-sol-xhigh78$4 / $20AASource: Artificial Analysis · Independent third-party evaluation; not influenced by BazaarLinkView full evaluation on AA →
Frequently Asked Questions
Can I still use GPT 5 Codex through BazaarLink?
No. GPT 5 Codex is currently unavailable through BazaarLink. See the active alternatives linked on this page.
Relay integrity checks
- Tested endpoints
- 1 runs
- Independent hosts
- 1
- Model-family fingerprint match
- 100%
- Anomalies detected
- 1 runs
- Data range
- past 90 days
BazaarLink Probe verifies endpoints that claim to serve this model and flags behavior that differs from the reference baseline.
View the full integrity report →Related models and links
More from this provider: OpenAI