none reviewed yet · 2 benchmark observations · latest capture Sep 8, 2026
Inspect the evidenceOpenAI · MODEL PROFILE
GPT-5.5
Teams already pinned to GPT-5.5 snapshots who need a stable, known quantity
Saved editorial fit for your current task lens; not a benchmark result
How scoring worksVerified rates (Sep 8, 2026) · 100 runs / month at your token settings
Adjust workloadAt a glance
9 facts- Provider
- OpenAI
- Type
- API model
- Access
- OpenAI API, Codex harness
- Context
- 1,050,000 tokens
- Maximum output
- 128,000 tokens
- License / weights
- Proprietary
- Input modalities
- file, image, text
- Output modalities
- text
- Pricing notes
- $5 in / $30 out per 1M (AA); GPT-5.6 Sol now undercuts it at $4/$20
The practical trade-offs
Documented strengths
- Very well-sampled Arena row (13,258 votes, +/-6)
- SWE-Atlas debugging 44.7% is the best number in ByteDance's cross-vendor table
- 1M-class context with image input
- Mature, widely integrated model
Limitations to check
- Costs more than GPT-5.6 Sol while scoring lower on SWE-bench Pro
- Arena frontend Elo 1513 is bottom-quartile in this cohort
- No `max` effort tier
- Superseded by GPT-5.6, so investment is short-lived
Follow the source
6 source linksEvidence & conditions
6Source links
NoneReviewed records
2Benchmark runs
Sep 8, 2026Latest capture
- Evidence source 1
developers.openai.comDate not recorded - Evidence source 2
arena.aiDate not recorded - Evidence source 3
benchlm.aiDate not recorded - Evidence source 4
benchlm.aiDate not recorded - Evidence source 5
artificialanalysis.aiDate not recorded - Evidence source 6
seed.bytedance.comDate not recorded
Benchmark observations
SWE-Bench Pro Inspect conditions
- name
- SWE-Bench Pro
- value
- 59.4
- unit
- %
- source Url
- https://openai.com/index/gpt-5-6/
- checked At
- 2026-09-08T19:30:56Z
- attribution
- provider-reported
- configuration
- OpenAI launch table; single-model column, not Ultra. Exact effort and harness not stated in the table.
DeepSWE v1.1 Inspect conditions
- name
- DeepSWE v1.1
- value
- 67
- unit
- %
- source Url
- https://openai.com/index/gpt-5-6/
- checked At
- 2026-09-08T19:30:56Z
- attribution
- provider-reported
- configuration
- OpenAI launch table; single-model column, not Ultra. Exact effort and harness not stated in the table.
Source reports, measured results, and editorial assessments are separate evidence types. Source dates do not imply a new benchmark run. Capture dates are shown when recorded; otherwise we say the capture date was not recorded. Recorded dates are compared with this catalogue snapshot (Sep 11, 2026), not today’s date.
Method AIS-V2
How this page is assessed
Quality claims follow Method AIS-V2.
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