Which is better for coding — GPT-5.1 Instant or LongCat-Flash-Lite?

Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.

Which model is cheaper — GPT-5.1 Instant or LongCat-Flash-Lite?

API pricing data is available on the individual model pages.

Which has a larger context window — GPT-5.1 Instant or LongCat-Flash-Lite?

Context window data is available on the individual model pages.

GPT-5.1 Instant vs LongCat-Flash-Lite: Specs & Benchmark Comparison

Characteristic	GPT-5.1 Instant	LongCat-Flash-Lite
Company	OpenAI	Meituan
Release Date	November 11, 2025	February 4, 2026
Parameters	—	69B
Multimodal	Yes	No
Context (input)	256K	—
Context (output)	32K	—
Input Price / 1M	$0.30	—
Output Price / 1M	$1.20	—
Average Score	0.9	0.8
Benchmarks
TAU2 Telecom	1.0	0.7
GPQA	0.9	0.7

Visual Benchmark Comparison

GPT-5.1 Instant

LongCat-Flash-Lite

TAU2 Telecom1.0 vs 0.7

1.0

0.7

GPQA0.9 vs 0.7

0.9

0.7

Verdict

LongCat-Flash-Lite leads in 1 out of 2 comparison categories.

Overall Performance

Both models show comparable average scores: GPT-5.1 Instant — 0.9, LongCat-Flash-Lite — 0.8.

Recency

LongCat-Flash-Lite is newer: released 2/4/2026 vs 11/11/2025.

More About These Models

GPT-5.1 Instant

OpenAI — specs, benchmarks, API

LongCat-Flash-Lite

Meituan — specs, benchmarks, API

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All model comparisons →

The GPT-5.1 Instant and LongCat-Flash-Lite comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.1 Instant or LongCat-Flash-Lite page. See also the complete list of AI model comparisons.