GPT-6 Astra vs LFM2.5-2.6B: Specs & Benchmark Comparison

GPT-6 Astra is developed by OpenAI, while LFM2.5-2.6B comes from Liquid AI. LFM2.5-2.6B was released in August 2026, and GPT-6 Astra followed a month later in September 2026. LFM2.5-2.6B has a published size of about 3 billion parameters; OpenAI has not disclosed the parameter count of GPT-6 Astra.

We have 22 benchmark results for GPT-6 Astra and 8 benchmark results for LFM2.5-2.6B, but they were measured on different benchmarks, so there is no like-for-like scoreboard.

GPT-6 Astra is available through an API at $10 per million input tokens with a 1M-token context window. We do not track a hosted API for LFM2.5-2.6B, so pricing and context cannot be compared directly.

CharacteristicGPT-6 AstraLFM2.5-2.6B
CompanyOpenAILiquid AI
Release DateSeptember 4, 2026August 4, 2026
Parameters—3B
MultimodalYesNo
Context (input)1.1M—
Context (output)128K—
Input Price / 1M$10.00—
Output Price / 1M$50.00—
Average Score74.4%55.5%

Verdict

GPT-6 Astra leads in 1 out of 2 comparison categories.

Overall Performance

Both models show comparable average scores: GPT-6 Astra — 0.7, LFM2.5-2.6B — 0.6.

Recency

GPT-6 Astra is newer: released 9/4/2026 vs 8/4/2026.

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Frequently Asked Questions

Which is better for coding — GPT-6 Astra or LFM2.5-2.6B?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GPT-6 Astra or LFM2.5-2.6B?
API pricing data is available on the individual model pages.
Which has a larger context window — GPT-6 Astra or LFM2.5-2.6B?
Context window data is available on the individual model pages.

The GPT-6 Astra and LFM2.5-2.6B comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-6 Astra or LFM2.5-2.6B page. See also the complete list of AI model comparisons.