GPT-5.5 (low)

GPT-5.5 (low)

OpenAI · Released Apr 23, 2026
Intelligence #40 / 650
70.0 our score
Speed #206 / 296
61.4 tok/s
Input Price #633 / 688
$5.00 per 1M tokens
Output Price #645 / 688
$30.00 per 1M tokens
Context
Not reported

Analysis Summary

This lighter GPT-5.5 configuration still achieves strong coding and agentic scores, with solid instruction-following and reasonable long-context handling, though its raw intelligence trails the medium and full configurations.

It suits businesses running coding assistants, moderate-complexity agents, or automated workflows where speed and cost efficiency are prioritised over maximum reasoning depth.

Priced the same as other GPT-5.5 tiers at $5 input and $30 output per million tokens, it offers a reasonable middle ground for teams balancing capability against latency.

Assessed July 29, 2026

Editorial notes

GPT-5.5 (low) retains strong coding and agentic performance with slightly reduced reasoning depth compared to higher configurations.

Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?

DFO Verdict

GPT-5.5 (low) retains strong coding and agentic performance with slightly reduced reasoning depth compared to higher configurations.

#40 of 650 overall

Benchmark scores

GPQA Diamond 91%
HLE 31%
SciCode 51.6%
TerminalBench Hard 52.3%
τ²-Bench 83.9%
IFBench 64.4%
LCR 72%

Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.

43.5 Intelligence Index·60.9 Coding Index·30.4 Agentic Index

How GPT-5.5 (low) compares

GPT-5.5 (low) ranks #26 of 401 AI models we track for overall intelligence, #23 of 176 for coding, #40 of 157 for agentic tasks. At $5.00 per million input tokens it is cheaper than 8% of comparable models.

Position in the field
Intelligence: smarter than 94% of models #40
Speed: faster than 30% of models #206
Price: cheaper than 8% of models #633
worst in fieldmedianbest in field
Price vs frontier peers · $ per 1M tokens
GPT-5.5 (low) $5.00 in $30.00 out
Anthropic: Claude Fable 5 $10.00 in $50.00 out
Claude Opus 5 $5.00 in $25.00 out
Anthropic: Claude Opus 4.8 $5.00 in $25.00 out

Dark bar = input · light bar = output, scaled to the priciest peer.

Context window vs peers · tokens

1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.

Intelligence6.6Technical7.5Value4.5Content7.5
Performance profile

Strongest on technical. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.

Compare shapes side-by-side →

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $5.00 $0.005000
Output $30.00 $0.030000

What would GPT-5.5 (low) cost your business?

Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.

A website chatbot handling around 100 customer conversations a day, a few short messages each.

3,000
One request is one message, email, draft or automation call.
1,200 tokens

Full calculator with 688 models → Price Calculator

DFO AI AUTOMATION

These numbers get smaller with the right architecture.

We route routine calls to cheap models and save GPT-5.5 (low) for the hard ones. Most clients cut their estimate by 60-80%.

Talk to our team

Frequently asked questions about GPT-5.5 (low)

How much does GPT-5.5 (low) cost?

GPT-5.5 (low) costs $5.00 per million input tokens and $30.00 per million output tokens.

Is GPT-5.5 (low) good for coding?

On our coding benchmark index, GPT-5.5 (low) ranks #23 of 176 models, placing it in the top quartile of the field for code generation and debugging.

Who created GPT-5.5 (low)?

GPT-5.5 (low) is developed by OpenAI and was released on April 23, 2026.

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